Definitions for aperture
ˈæp ər tʃəraper·ture

Princeton's WordNetRate this definition:0.0 / 0 votes

1. aperturenoun

   a device that controls amount of light admitted

2. aperturenoun

   a natural opening in something

3. aperturenoun

   an man-made opening; usually small

WiktionaryRate this definition:0.0 / 0 votes

1. aperturenoun

   An opening; an open space; a gap, cleft, or chasm; a passage perforated; a hole; as, an aperture in a wall.

2. aperturenoun

   Something which restricts the diameter of the light path through one plane in an optical system.

3. aperturenoun

   The diameter of the aperture (in the sense above) which restricts the width of the light path through the whole system. For a telescope, this is the diameter of the objective lens. e.g. a telescope may have a 100cm aperture.

4. aperturenoun

   The maximum angle between the two generatrices.

   If the generatrix makes an angle u03B8 to the axis, then the aperture is 2u03B8.

5. Etymology: apertura, from apertus, past participle of aperire, opposed to operire. See aperient.

Samuel Johnson's DictionaryRate this definition:0.0 / 0 votes

1. Aperturenoun

   Etymology: from apertus, open.

   1. The act of opening.

   Hence ariseth the facility of joining a consonant to a vowel, because from an appulse to an aperture is easier, than from one appulse to another. William Holder, Elements of Speech.

   2. An open place.

   If memory be made by the easy motion of the spirits through the opened passages, images, without doubt, pass through the same apertures. Joseph Glanvill, Scepsis Scientifica, Preface.

   3. The hole next the object glass of a telescope or microscope.

   The concave metal bore an aperture of an inch; but the aperture was limited by an opaque circle, perforated in the middle. Isaac Newton, Opticks.

   4. Enlargement; explanation: a sense seldom found.

   It is too much untwisted by the doctors, and, like philosophy, made intricate by explications, and difficult by the aperture and dissolution of distinctions. Jeremy Taylor, Worthy Communic.

ChatGPTRate this definition:0.0 / 0 votes

1. aperture

   Aperture is an opening, hole, or gap that allows light or other substances to pass through. In photography, it refers to the adjustable opening in a camera lens, which controls the amount of light that reaches the film or image sensor.

Webster DictionaryRate this definition:0.0 / 0 votes

1. Aperturenoun

   the act of opening

2. Aperturenoun

   an opening; an open space; a gap, cleft, or chasm; a passage perforated; a hole; as, an aperture in a wall

3. Aperturenoun

   the diameter of the exposed part of the object glass of a telescope or other optical instrument; as, a telescope of four-inch aperture

4. Etymology: [L. apertura, fr. aperire. See Aperient.]

WikidataRate this definition:0.0 / 0 votes

1. Aperture

   In optics, an aperture is a hole or an opening through which light travels. More specifically, the aperture of an optical system is the opening that determines the cone angle of a bundle of rays that come to a focus in the image plane. The aperture determines how collimated the admitted rays are, which is of great importance for the appearance at the image plane. If an aperture is narrow, then highly collimated rays are admitted, resulting in a sharp focus at the image plane. If an aperture is wide, then uncollimated rays are admitted, resulting in a sharp focus only for rays with a certain focal length. This means that a wide aperture results in an image that is sharp around what the lens is focusing on and blurred otherwise. The aperture also determines how many of the incoming rays are actually admitted and thus how much light reaches the image plane. An optical system typically has many openings, or structures that limit the ray bundles. These structures may be the edge of a lens or mirror, or a ring or other fixture that holds an optical element in place, or may be a special element such as a diaphragm placed in the optical path to limit the light admitted by the system. In general, these structures are called stops, and the aperture stop is the stop that determines the ray cone angle, or equivalently the brightness, at an image point.

Chambers 20th Century DictionaryRate this definition:0.0 / 0 votes

1. Aperture

   a′pėrt-ūr, n. an opening: the space through which light passes in an optical instrument: a hole. [L. apertura—aperīre, to open.]

Dictionary of Nautical TermsRate this definition:0.0 / 0 votes

1. aperture

   In astronomy, the opening of a telescope tube next the object-glass, through which the rays of light and image of the object are conveyed to the eye. It is usually estimated by the clear diameter of the object-glass.

Matched Categories

1. • Eye
   • Hole
   • Opening
   • Regulator

Usage in printed sourcesFrom: 

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How to pronounce aperture?

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 aperture in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of aperture in Chaldean Numerology is: 6

2. Pythagorean Numerology

   The numerical value of aperture in Pythagorean Numerology is: 5

Examples of aperture in a Sentence

1. Erik Pevernagie:

   A doorway is an ambiguous phenomenon, a liminal spot in a person’s life. A door can be a choice, a possibility, a protection or an aperture to new-fangled values. It can mean a barrier, a prison or a gate to freedom. It can, however, vanish in the mist of unawareness by lack of social concern. At that moment, our freedom has become our jail and we feel locked up in our own liberty. Any exit has waned: the doorway has been absorbed in the stupor of our infatuation. ( “In the doorway” )

2. Harvey Fineberg:

   That's the brilliance of Kelvin Droegemeier, to elicit this kind of input and turn to the academics in the first place, they're genuinely trying to widen their aperture for advice, and I think so far it's working.

3. Judie Worrell:

   If I'm playing a horn arrangement on keyboard, or strings, it sounds like strings or horns, 'cause I know how to phrase it, how a string phrases, different attacks from the aperture for horns, trumpets, sax or trombones.

4. Edward Hoagland:

   Animals used to provide a lowlife way to kill and get away with it, as they do still, but, more intriguingly, for some people they are an aperture through which wounds drain. The scapegoat of olden times, driven off for the bystanders sins, has become a tender thing, a running injury. There, running away is me: hurt it and you are hurting me.

5. Erik Pevernagie:

   The upper lip must never tremble. Some fear to be abused and have their identity destroyed, if they make an aperture in the curtain of their emotions. (“The upper lip must never tremble”)

Popularity rank by frequency of use

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=aperture
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Aperture
3. ^ Samuel Johnson's Dictionary
   https://johnsonsdictionaryonline.com/views/search.php?term=aperture
4. ^ ChatGPT
   https://chat.openai.com
5. ^ Webster Dictionary
   https://www.merriam-webster.com/dictionary/aperture
6. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=aperture
7. ^ Chambers 20th Century Dictionary
   https://www.gutenberg.org/files/37683/37683-h/37683-h.htm#:~:text=aperture
8. ^ Dictionary of Nautical Terms
   https://www.gutenberg.org/cache/epub/26000/pg26000-images.html#:~:text=aperture
9. ^ Usage in printed sources
   https://books.google.com/ngrams/graph?content=aperture