Online Dictionary

bulb Explained

bulb at CMU American English spelling Of Explained:


bulb at English => English (English Etymology) Of Explained:

1568, "an onion," from M.Fr. bulbe, from L. bulbus "bulb, onion," from Gk. bolbos "plant with round swelling on underground stem." Expanded by 1800 to "swelling in a glass tube" (thermometer bulb, light bulb, etc.). ///

bulb at English => English (Longman) Of Explained:

n [C] filament, thread// [Date: 1500-1600; Language: Latin; Origin: bulbus, from Greek bolbos 'plant with a bulb']//
1 the glass part of an electric light, that the light shines from: light bulb// --a 100 watt bulb//
2 a root shaped like a ball that grows into a flower or plant: --tulip bulbs//

bulb at English => English (The Britannica Concise) Of Explained:

In botany, the resting stage of certain seed plants, particularly perennial monocotyledons (see cotyledon), consisting of a relatively large, usually globe-shaped, underground bud with membranous or fleshy overlapping leaves arising from a short stem. The fleshy leaves function as food reserves that enable a plant to lie dormant when water is unavailable (during winter or drought) and to resume active growth when favorable conditions again prevail. There are two main types. One, typified by the onion, has a thin papery covering protecting its fleshy leaves. The other, the scaly bulb, as seen in true lilies, has naked storage leaves, with no papery covering, making the bulb appear to consist of angular scales. Bulbs enable many common ornamentals, such as narcissus, tulip, and hyacinth, to flower rapidly in early spring when growing conditions are favorable. Other bulb-producing plants bloom in the summer (e.g., lilies) or fall (e.g., the autumn crocus). The solid corms of the crocus and gladiolus, and the elongated rhizomes of some irises are not bulbs.

bulb at English => English (Moby Thesaurus II) Of Explained:

96 Moby Thesaurus words for "bulb":
ball, balloon, bilge, bladder, blain, bleb, blister, blob, boll,
bolus, boss, bow, bubble, bulbil, bulblet, bulge, bulla, bump,
bunch, burl, button, cahot, chine, clump, condyle, convex, corm,
dowel, ear, ellipsoid, flange, flap, gall, geoid, globe, globelet,
globoid, globule, glomerulus, gnarl, gob, gobbet, handle, hill,
hump, hunch, jog, joggle, knob, knot, knur, knurl, lip, loop, lump,
mole, mountain, nevus, nub, nubbin, nubble, oblate spheroid, orb,
orbit, orblet, papilloma, peg, pellet, prolate spheroid, radicle,
radix, rhizome, rib, ridge, ring, rondure, root, rootstock,
shoulder, sphere, spheroid, spherule, spine, stud, style, tab, tap,
taproot, tuber, tubercle, tubercule, verruca, vesicle, wale, wart,

bulb at English => English (Oxford Advanced Learners) Of Explained:


1 (also light bulb) the glass part that fits into an electric lamp, etc. to give light when it is switched on:
a 60-watt bulb * a room lit by bare bulbs (= with no decorative cover)

2 the round underground part of some plants, shaped like an onion, that grows into a new plant every year:
daffodil bulbs * the bulb fields of Holland

3 an object shaped like a bulb, for example the end of a THERMOMETER

Bulb at English => English (Websters 1913) Of Explained:

Bulb \Bulb\, v. i.
To take the shape of a bulb; to swell.

Bulb \Bulb\ (b[u^]lb), n. [L. bulbus, Gr. bolbo`s: cf. F.
1. (Bot.) 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. (Anat.) A name given to some parts that resemble in shape
certain bulbous roots; as, the bulb of the aorta.

{Bulb of the eye}, the eyeball.

{Bulb of a hair}, the ``root,'' or part whence the hair

{Bulb of the spinal cord}, the medulla oblongata, often
called simply bulb.

{Bulb of a tooth}, the vascular and nervous papilla contained
in the cavity of the tooth.

3. 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. --Tomlinson.

bulb at English => English (WordNet) Of Explained:

n 1: a modified bud consisting of a thickened globular
underground stem serving as a reproductive structure
2: electric lamp consisting of a glass bulb containing a wire
filament (usually tungsten) that emits light when heated
[syn: {light bulb}, {lightbulb}, {incandescent lamp}, {electric
light}, {electric-light bulb}]
3: a rounded part of a cylindrical instrument (usually at one
end); "the bulb of a syringe"
4: 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" [syn: {medulla oblongata}, {medulla}]
5: a rounded dilation or expansion in a canal or vessel or

bulb at English (WD) Of Explained:

Category: Image - :Snowdrop Galanthus gracilis.jpg|thumb|right|Flowers growing from a bulb (lower left).


From Inter: etyl » frm Inter: term » bulbe|lang=frm, from Inter: etyl » la Inter: term » bulbus||lang=la|bulb, onion, from Inter: etyl » grc Inter: term » βολβός||tr=bolbos|lang=grc|plant with round swelling on underground stem.


* Inter: IPA » /bʌlb/|/boʊlb/
  • Inter: audio » en-us-bulb.ogg|Audio (US)
  • Inter: rhymes » ʌlb


    Inter: en-nou » n

  • Any solid object rounded at one end and tapering on the other, possibly attached to a larger object at the tapered end.
    1. A light bulb.
    2. The bulb-shaped root portion of a plant such as a tulip, from which the rest of the plant may be regrown.
    3. 2005, Inter: w » Plato, Sophist. Translation by Lesley Brown. Category: w - :Stephanus pagination|265c.
    4. : the plants which grow in the earth from seed or bulbs.
    5. Inter: nautica » l a bulbous protuberance at the forefoot of certain vessels to reduce turbulence.

      Related terms

      Inter: rel-top » terms related to bulb

  • bulbiferous
  • bulbil

  • Inter: rel-mi » d
    • bulbous

    Inter: rel-botto » m

    Derived terms

    Inter: rel-top » terms derived from bulb
  • lampbulb
  • light bulb

  • Inter: rel-mi » d
    • flash bulb
    • tulip bulb

    Inter: rel-botto » m


    Inter: trans-top » rounded solid object
  • Finnish: Inter: t+ » fi|kupu
  • French: Inter: t+ » fr|bulbe|m
  • Greek: Inter: t+ » el|βολβός|m|tr=volvós
  • Indonesian: Inter: t+ » id|bola lampu, Inter: t+ » id|lampu pijar, Inter: t+ » id|bohlam
  • Luhya: Inter: tø » luy|eglopu
  • Portuguese: Inter: t+ » pt|bulbo|m

  • Inter: trans-mi » d
    • Romanian: Inter: t+ » ro|bulb|m
    • Russian: Inter: t+ » ru|утолщение|n|tr=utolščénije|sc=Cyrl, Inter: t+ » ru|выпуклость|f|tr=výpuklostʹ|sc=Cyrl, Inter: t+ » ru|шарик|m|tr=šárik|sc=Cyrl
    • Spanish: Inter: t+ » es|cormo|m
    • Swahili: Inter: t+ » sw|glopu

    Inter: trans-botto » m
    Inter: trans-see » light bulb
    Inter: trans-top » bulb-shaped root
    • Bulgarian: Inter: t- » bg|луковица|f|sc=Cyrl|tr=lúkovica
    • Chinese:
    • : Mandarin: Inter: t » cmn|鱗莖|sc=Hani, Inter: t » cmn|鳞茎|tr=línjīng|sc=Hani
    • Czech: Inter: t+ » cs|bulva|f, Inter: t+ » cs|hlíza|f
    • Finnish: Inter: t+ » fi|sipuli
    • French: Inter: t+ » fr|bulbe|m
    • German: Inter: t+ » de|Zwiebel|f
    • Greek: Inter: t+ » el|βολβός|m|tr=volvós
    • Hungarian: Inter: t+ » hu|virághagyma
    • Italian: Inter: t- » it|bulbo|m
    • Japanese: Inter: t- » ja|球根|tr=きゅうこん, kyūkon|sc=Jpan
    • Korean: Inter: t+ » ko|알뿌리|tr=alppuri|sc=Kore
    • Macedonian: Inter: t- » mk|луковица|f|tr=lukóvica|sc=Cyrl
    • Malay: Inter: t- » ms|bebawang

    Inter: trans-mi » d
  • Polish: Inter: t- » pl|cebulka|f
  • Portuguese: Inter: t+ » pt|bulbo|m
  • Romanian: Inter: t+ » ro|bulb|m
  • Russian: Inter: t+ » ru|луковица|f|sc=Cyrl|tr=lúkovica
  • Scottish Gaelic: Inter: t- » gd|bolgan|m
  • Serbo-Croatian:
  • : Cyrillic: Inter: t- » sh|луковица|f, Inter: t- » sh|чебуљица|f
  • : Roman: Inter: t- » sh|lukovica|f, Inter: t- » sh|čebuljica|f
  • Slovak: Inter: t- » sk|cibuľka|f
  • Slovene: Inter: t- » sl|čebulica|f
  • Spanish: Inter: t+ » es|bulbo|m
  • Swahili: Inter: t+ » sw|glopu
  • Swedish: Inter: t+ » sv|lök
  • Ukrainian: Inter: t+ » uk|цибулина|f|tr=cybúlyna|sc=Cyrl

  • Inter: trans-botto » m
    Inter: checktrans-to » p
    • Inter: ttbc » io: bulbo
    • Inter: ttbc » te: బల్బు (balbu), దీపము(dIpamu), బుడ్డి (buDDi)

    Inter: trans-botto » m


    Inter: en-ver » b
  • Inter: intransitiv » e To take the shape of a bulb; to swell.


    * blub

  • Category: Category:1000 English basic words -
    Translation: ar » bulb
    Translation: cs » bulb
    Translation: cy » bulb
    Translation: de » bulb
    Translation: et » bulb
    Translation: el » bulb
    Translation: eo » bulb
    Translation: fa » bulb
    Translation: fr » bulb
    Translation: gl » bulb
    Translation: ko » bulb
    Translation: hy » bulb
    Translation: io » bulb
    Translation: it » bulb
    Translation: kn » bulb
    Translation: sw » bulb
    Translation: lo » bulb
    Translation: li » bulb
    Translation: hu » bulb
    Translation: mg » bulb
    Translation: ml » bulb
    Translation: my » bulb
    Translation: nl » bulb
    Translation: ja » bulb
    Translation: pl » bulb
    Translation: ro » bulb
    Translation: ru » bulb
    Translation: sq » bulb
    Category: simple:bulb -
    Translation: fi » bulb
    Translation: sv » bulb
    Translation: ta » bulb
    Translation: te » bulb
    Translation: tr » bulb
    Translation: vi » bulb
    Translation: zh » bulb