Definitions for neptune
ˈnɛp tun, -tyunnep·tune

Princeton's WordNetRate this definition:4.5 / 2 votes

1. Neptunenoun

   (Roman mythology) god of the sea; counterpart of Greek Poseidon

2. Neptunenoun

   a giant planet with a ring of ice particles; the 8th planet from the sun is the most remote of the gas giants

   "the existence of Neptune was predicted from perturbations in the orbit of Uranus and it was then identified in 1846"

GCIDERate this definition:5.0 / 1 vote

1. Neptunenoun

   (Astron.) The remotest major planet of our solar system, discovered -- as a result of the computations of Leverrier, of Paris -- by Galle, of Berlin, September 23, 1846. It is classed as a gas giant, and has a radius of 22,716 km and an estimated mass of 1.027 x 1026 kg, with an average density of 2.27 g/cc. Its mean distance from the sun is about 5,000,000,000 km (3,106,856,000 miles), and its period of revolution is about 164.78 years.

WiktionaryRate this definition:5.0 / 1 vote

1. Neptunenoun

   The god of the ocean and of earthquakes.

2. Neptunenoun

   The eighth planet in our solar system, represented in astronomy and astrology by .

3. Etymology: From Neptunus.

WikipediaRate this definition:0.0 / 0 votes

1. Neptune

   Neptune is the eighth planet from the Sun and the farthest known planet in the Solar System. It is the fourth-largest planet in the Solar System by diameter, the third-most-massive planet, and the densest giant planet. It is 17 times the mass of Earth, and slightly more massive than its near-twin Uranus. Neptune is denser and physically smaller than Uranus because its greater mass causes more gravitational compression of its atmosphere. Being composed primarily of gases and liquids, it has no well-defined solid surface. The planet orbits the Sun once every 164.8 years at an average distance of 30.1 astronomical units (4.5 billion kilometres; 2.8 billion miles). It is named after the Roman god of the sea and has the astronomical symbol , representing Neptune's trident.Neptune is not visible to the unaided eye and is the only planet in the Solar System found by mathematical prediction rather than by empirical observation. Unexpected changes in the orbit of Uranus led Alexis Bouvard to hypothesise that its orbit was subject to gravitational perturbation by an unknown planet. After Bouvard's death, the position of Neptune was predicted from his observations, independently, by John Couch Adams and Urbain Le Verrier. Neptune was subsequently observed with a telescope on 23 September 1846 by Johann Galle within a degree of the position predicted by Le Verrier. Its largest moon, Triton, was discovered shortly thereafter, though none of the planet's remaining 13 known moons were located telescopically until the 20th century. The planet's distance from Earth gives it a very small apparent size, making it challenging to study with Earth-based telescopes. Neptune was visited by Voyager 2, when it flew by the planet on 25 August 1989; Voyager 2 remains the only spacecraft to have visited Neptune. The advent of the Hubble Space Telescope and large ground-based telescopes with adaptive optics has recently allowed for additional detailed observations from afar. Like the gas giants (Jupiter and Saturn), Neptune's atmosphere is composed primarily of hydrogen and helium, along with traces of hydrocarbons and possibly nitrogen, but contains a higher proportion of ices such as water, ammonia and methane. Similar to Uranus, its interior is primarily composed of ices and rock; both planets are normally considered "ice giants" to distinguish them. Along with Rayleigh scattering, traces of methane in the outermost regions in part account for the planet's blue appearance. Newest data from the Gemini observatory shows the blue color is more saturated than the one present on Uranus due to thinner haze of Neptune's more active atmosphere.In contrast to the hazy, relatively featureless atmosphere of Uranus, Neptune's atmosphere has active and visible weather patterns. For example, at the time of the Voyager 2 flyby in 1989, the planet's southern hemisphere had a Great Dark Spot comparable to the Great Red Spot on Jupiter. More recently, in 2018, a newer main dark spot and smaller dark spot were identified and studied. In addition, these weather patterns are driven by the strongest sustained winds of any planet in the Solar System, with recorded wind speeds as high as 2,100 km/h (580 m/s; 1,300 mph). Because of its great distance from the Sun, Neptune's outer atmosphere is one of the coldest places in the Solar System, with temperatures at its cloud tops approaching 55 K (−218 °C; −361 °F). Temperatures at the planet's centre are approximately 5,400 K (5,100 °C; 9,300 °F). Neptune has a faint and fragmented ring system (labelled "arcs"), which was discovered in 1984, then later confirmed by Voyager 2.

ChatGPTRate this definition:0.0 / 0 votes

1. neptune

   Neptune is the eighth and farthest planet from the sun in the solar system. Named after the Roman god of the sea, it is the fourth-largest planet by diameter and the third-largest by mass. Neptune is known for its vibrant blue color, caused by methane in its atmosphere, and for its severe and active weather patterns, with the fastest recorded wind speeds in the solar system. The planet also features a system of rings and has at least 14 moons, the largest of which is Triton.

Webster DictionaryRate this definition:0.0 / 0 votes

1. Neptunenoun

   the son of Saturn and Ops, the god of the waters, especially of the sea. He is represented as bearing a trident for a scepter

2. Neptunenoun

   the remotest known planet of our system, discovered -- as a result of the computations of Leverrier, of Paris -- by Galle, of Berlin, September 23, 1846. Its mean distance from the sun is about 2,775,000,000 miles, and its period of revolution is about 164,78 years

3. Etymology: [L. Neptunus.]

WikidataRate this definition:0.0 / 0 votes

1. Neptune

   Neptune is the eighth and farthest planet from the Sun in the Solar System. It is the fourth-largest planet by diameter and the third-largest by mass. Among the gaseous planets in the solar system, Neptune is the most dense. Neptune is 17 times the mass of Earth and is slightly more massive than its near-twin Uranus, which is 15 times the mass of Earth but not as dense. On average, Neptune orbits the Sun at a distance of 30.1 AU, approximately 30 times the Earth–Sun distance. Named for the Roman god of the sea, its astronomical symbol is ♆, a stylised version of the god Neptune's trident. Neptune was the first planet found by mathematical prediction rather than by empirical observation. Unexpected changes in the orbit of Uranus led Alexis Bouvard to deduce that its orbit was subject to gravitational perturbation by an unknown planet. Neptune was subsequently observed on 23 September 1846 by Johann Galle within a degree of the position predicted by Urbain Le Verrier, and its largest moon, Triton, was discovered shortly thereafter, though none of the planet's remaining 12 moons were located telescopically until the 20th century. Neptune has been visited by only one spacecraft, Voyager 2, which flew by the planet on 25 August 1989.

Chambers 20th Century DictionaryRate this definition:5.0 / 1 vote

1. Neptune

   nep′tūn, n. (Rom. myth.) the god of the sea, identified with the Greek Poseidon, represented with a trident in his hand: (astron.) the outermost planet of the solar system, discovered in 1846.—adj. Neptū′nian, pertaining to the sea: (geol.) formed by water: applied to stratified rocks or to those due mainly to the agency of water, as opposed to Plutonic or Igneous.—n. Nep′tūnist, one who holds the Neptunian theory in geology—also adj. [L. Neptunus.]

The Nuttall EncyclopediaRate this definition:0.0 / 0 votes

1. Neptune

   the chief marine deity of the Romans, and identified with the Poseidon of the Greeks, is represented with a trident in his hand as his sceptre.

2. Neptune

   the remotest planet of the solar system at present known; it is twice as far distant from the sun as Uranus (q. v.) is, deemed before its discovery the remotest; its diameter is four times greater than that of the earth, and it takes 60,126 days to revolve round the sun, accompanied by a solitary satellite; it was discovered in 1846 by Adams (q. v.) and Leverrier (q. v.), who were guided to the spot where they found it from the effect of its neighbourhood on the movements of Uranus.

U.S. National Library of MedicineRate this definition:0.0 / 0 votes

1. Neptune

   The eighth planet in order from the sun. It is one of the five outer planets of the solar system. Its two natural satellites are Nereid and Triton.

Dictionary of Nautical TermsRate this definition:0.0 / 0 votes

1. neptune

   A superior planet, recently discovered; it is the most distant member of the solar system yet known, and was revealed by the effect which its attraction had produced upon the movements of Uranus; this was one of the most admirable solutions in modern mathematical science. Neptune, so far as is yet known, has no satellites.

Editors ContributionRate this definition:0.0 / 0 votes

1. Neptune

   A planet in the solar system.

   Neptune is another known and seen planet.

   
   

   Submitted by MaryC on May 3, 2015  

Suggested ResourcesRate this definition:0.0 / 0 votes

1. neptune

   The neptune symbol -- In this Symbols.com article you will learn about the meaning of the neptune symbol and its characteristic.

MythologyRate this definition:0.0 / 0 votes

1. Neptune

   (Nep′tune), god of the sea, was a son of Saturn and Cybele, and brother to Jupiter and Pluto. He quarreled with Jupiter because he did not consider that the dominion of the sea was equal to Jupiter’s empire of heaven and earth; and he was banished from the celestial regions, after having conspired with Pluto to dethrone Jupiter. Neptune was married to Amphitrite, daughter of Oceanus and Tethys, by whom he had a son named Triton. He was also father of Polyphemus (one of the Cyclopes), Phoreus, and Proteus. Neptune is represented as being seated in a shell chariot, drawn by dolphins or sea-horses, and surrounded by Tritons and sea-nymphs. He holds in his hand a trident, with which he rules the waves. Though a marine deity, he was reputed to have presided over horse-training and horse-races; but he is principally known as the god of the ocean; and the two functions of the god are portrayed in the sea horses with which his chariot is drawn, the fore-half of the animal being a horse, and the hind-half a dolphin. Ships were also under his protection, and whenever he appeared on the ocean there was a dead calm.

Who Was Who?Rate this definition:0.0 / 0 votes

1. Neptune

   Boss of the seas. Has charge of the Atlantic liners wireless, and the seasick. Ambition: A bridge from London to New York. Recreation: Storms. Address: Atlantic. Clubs: Yacht.

Surnames Frequency by Census RecordsRate this definition:0.0 / 0 votes

1. NEPTUNE

   According to the U.S. Census Bureau, Neptune is ranked #17033 in terms of the most common surnames in America.
   
   The Neptune surname appeared 1,668 times in the 2010 census and if you were to sample 100,000 people in the United States, approximately 1 would have the surname Neptune.
   
   48.9% or 816 total occurrences were White.
   36.3% or 606 total occurrences were Black.
   7.3% or 123 total occurrences were American Indian or Alaskan Native.
   3.9% or 66 total occurrences were of two or more races.
   3% or 51 total occurrences were of Hispanic origin.
   0.3% or 6 total occurrences were Asian.

Matched Categories

1. • Jovian Planet
   • Roman Deity
   • Roman Mythology
   • Superior Planet

How to pronounce neptune?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say neptune in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of neptune in Chaldean Numerology is: 2

2. Pythagorean Numerology

   The numerical value of neptune in Pythagorean Numerology is: 5

Examples of neptune in a Sentence

1. Michael Roman:

   Temperature variations may be related to seasonal changes in Neptune's atmospheric chemistry, which can alter how effectively the atmosphere cools, but random variability in weather patterns or even a response to the 11-year solar activity cycle may also have an effect.

2. Alex Teachey:

   It it turns out to be, as we've suspected, a massive Jupiter-like planet with a moon roughly the size of Neptune, it's very strange, and not like anything astronomers have expected to exist out there, and that might tell you there's really some strange stuff going on elsewhere, not at all like what we see in our neighborhood.

3. Michael Roman:

   I think Neptune is itself very intriguing to many of us because we still know so little about it, this all points towards a more complicated picture of Neptune's atmosphere and how it changes with time.

4. Karl Mitchell:

   Triton is weird, but yet relevantly weird, because of the science we can do there, we know the surface has all these features weve never seen before, which motivates us to want to know How does this world work ? Global color mosaic of Triton, taken in 1989 by Voyager 2 during its flyby of the Neptune system. ( Credit : NASA/JPL/USGS) NEPTUNES MOONS ARE IN A DANCE OF AVOIDANCE, NASA SAYS.

5. Naomi Rowe-Gurney:

   The JWST gives us the ability to look at both Uranus and Neptune in a completely new way because we have never had a telescope of this size that looks in the infrared, the infrared can show us new depths and features that are difficult to see from the ground with the atmosphere in the way and invisible to telescopes that look in visible light like Hubble.

Popularity rank by frequency of use

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=neptune
2. ^ GCIDE
   https://gcide.gnu.org.ua/?q=neptune
3. ^ Wiktionary
   https://en.wiktionary.org/wiki/Neptune
4. ^ Wikipedia
   https://en.wikipedia.org/wiki/Neptune
5. ^ ChatGPT
   https://chat.openai.com
6. ^ Webster Dictionary
   https://www.merriam-webster.com/dictionary/neptune
7. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=neptune
8. ^ Chambers 20th Century Dictionary
   https://www.gutenberg.org/files/37683/37683-h/37683-h.htm#:~:text=neptune
9. ^ The Nuttall Encyclopedia
   https://www.gutenberg.org/cache/epub/12342/pg12342-images.html#Neptune
10. ^ Dictionary of Nautical Terms
    https://www.gutenberg.org/cache/epub/26000/pg26000-images.html#:~:text=neptune
11. ^ Mythology
    https://www.gutenberg.org/cache/epub/42474/pg42474-images.html#:~:text=neptune
12. ^ Who Was Who?
    https://www.gutenberg.org/cache/epub/984/pg984-images.html#:~:text=neptune
13. ^ Surnames Frequency by Census Records
    https://www.census.gov/topics/population/genealogy/data/2010_surnames.html