What does bulb mean?

Definitions for bulb

Here are all the possible meanings and translations of the word bulb.

Princeton's WordNet

  1. bulb(noun)

    a modified bud consisting of a thickened globular underground stem serving as a reproductive structure

  2. light bulb, lightbulb, bulb, incandescent lamp, electric light, electric-light bulb(noun)

    electric lamp consisting of a transparent or translucent glass housing containing a wire filament (usually tungsten) that emits light when heated by electricity

  3. bulb(noun)

    a rounded part of a cylindrical instrument (usually at one end)

    "the bulb of a syringe"

  4. bulb(noun)

    anything with a round shape resembling a teardrop

  5. medulla oblongata, medulla, bulb(noun)

    lower or hindmost part of the brain; continuous with spinal cord; (`bulb' is an old term for medulla oblongata)

    "the medulla oblongata is the most vital part of the brain because it contains centers controlling breathing and heart functioning"

  6. bulb(noun)

    a rounded dilation or expansion in a canal or vessel or organ


  1. bulb(Noun)

    Any solid object rounded at one end and tapering on the other, possibly attached to a larger object at the tapered end

    Etymology: From bulbe, from bulbus, from βολβός.

  2. bulb(Noun)

    A light bulb

    Etymology: From bulbe, from bulbus, from βολβός.

  3. bulb(Noun)

    The bulb-shaped root portion of a plant such as a tulip, from which the rest of the plant may be regrown.

    Etymology: From bulbe, from bulbus, from βολβός.

Webster Dictionary

  1. Bulb(noun)

    a spheroidal body growing from a plant either above or below the ground (usually below), which is strictly a bud, consisting of a cluster of partially developed leaves, and producing, as it grows, a stem above, and roots below, as in the onion, tulip, etc. It differs from a corm in not being solid

  2. Bulb(noun)

    a name given to some parts that resemble in shape certain bulbous roots; as, the bulb of the aorta

  3. Bulb(noun)

    an expansion or protuberance on a stem or tube, as the bulb of a thermometer, which may be of any form, as spherical, cylindrical, curved, etc

  4. Bulb(verb)

    to take the shape of a bulb; to swell


  1. Bulb

    A bulb is a short stem with fleshy leaves or leaf bases that function as food storage organs during dormancy. A bulb's leaf bases, also known as scales, generally do not support leaves, but contain food reserves to enable the plant to survive adverse conditions. At the center of the bulb is a vegetative growing point or an unexpanded flowering shoot. The base is formed by a stem, and plant growth occurs from this basal plate. Roots emerge from the underside of the base, and new stems and leaves from the upper side. Tunicate bulbs have dry, membranous outer scales that protect the continuous lamina of fleshy scales. Species in the genera Allium, Hippeastrum, Narcissus, and Tulipa all have tunicate bulbs. Non-tunicate bulbs, such as Lilium and Fritillaria species, lack the protective tunic and have looser scales. Other types of storage organs are sometimes erroneously referred to as bulbs. The technical term for plants that form underground storage organs, including bulbs as well as tubers and corms, is geophyte. Some epiphytic orchids form above-ground storage organs called pseudobulbs, that superficially resemble bulbs.

Chambers 20th Century Dictionary

  1. Bulb

    bulb, n. an onion-like root: any protuberance or enlargement resembling such.—v.i. to form bulbs: to bulge out or swell.—adjs. Bul′bar, Bulbed, Bul′bous, Bulbā′ceous, Bulb′iform, Bulbif′erous, Bul′bose, Bul′by.—ns. Bul′bule, a little bulb: a young bulb which grows from an old one; Bul′bus, a bulb. [L. bulbus—Gr. bolbos, an onion.]

Suggested Resources

  1. bulb

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

  2. BULB

    What does BULB stand for? -- Explore the various meanings for the BULB acronym on the Abbreviations.com website.

British National Corpus

  1. Nouns Frequency

    Rank popularity for the word 'bulb' in Nouns Frequency: #2976

How to pronounce bulb?

  1. Alex
    US English

How to say bulb in sign language?

  1. bulb


  1. Chaldean Numerology

    The numerical value of bulb in Chaldean Numerology is: 4

  2. Pythagorean Numerology

    The numerical value of bulb in Pythagorean Numerology is: 1

Examples of bulb in a Sentence

  1. Vikrant Parsai:

    You don’t have to be the brightest bulb in the house; when the darkness comes, you will be 100 watt.

  2. Football Federation Australia:

    The forecast ambient and Wet Bulb Globe Temperature (WBGT) for that match remain within acceptable ranges for the later kick-off and the air quality forecast is improving with the arrival of a wind change to the north east on Friday, in making decisions regarding whether a fixture will proceed, the safety, welfare and comfort of our players, match officials and fans remain our ongoing focus with regard to air quality issues as a result of these bushfires.

  3. Steven Lee:

    She was a single mom. It sounded very difficult for her to make it into the clinic, and her vision was changing and fluctuating a lot, she finally makes it in, and then she asked me this one question that really just stuck with me. ... 'Why can't we do eye exams at home?' and that just really gave me a light-bulb moment.

  4. Eric Adams:

    You could almost see the light bulb just click on and it was ... like, 'I'm ready.' In some ways the arrest changed his life.

  5. Anuj Somany:

    Awakening to the people's nature for a person brings sadness and not happiness, for it is very much like glowing of a bulb from outside for others but inside own feeling the burning sensation.

Images & Illustrations of bulb

  1. bulbbulbbulbbulbbulb

Popularity rank by frequency of use


Translations for bulb

From our Multilingual Translation Dictionary

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"bulb." Definitions.net. STANDS4 LLC, 2020. Web. 8 Jul 2020. <https://www.definitions.net/definition/bulb>.

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