BULB • DICTIONARY ONE.COM • Definition of Bulb

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/bəlb/ Listen

noun

Bulb n.

(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.

(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 originates.

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.

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.

A light bulb.

verb

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

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Etymology of 'Bulb'

Collaborative International Dictionary of English 0.48

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"Bulb" Quotes from Famous Books

... the most imposing and sacerdotal of bishops; but in private life none knew better how to disguise his cloth. He was moreover a man of parts, and from the construction of a Latin hexameter to the growing of a Holland bulb, had a word worth hearing on all subjects likely to engage the dilettante. A liking soon sprang up between Odo and this versatile prelate; and in the retirement of his lordship's cabinet, or pacing with him the garden-alleys set with ancient ...

— The Valley of Decision • Edith Wharton

... of those accidents that can occur easily in space. The passengers and the two crewmen on that particular waking shift (including Jakdane) were eating lunch on the center-deck. Quest picked up his bulb of coffee, but inadvertently pressed it before he got it to his lips. The coffee squirted all over the front of Asrange's ...

— The Jupiter Weapon • Charles Louis Fontenay

... innumerable holes, and running about those parts of the body that were uncovered, produced a titillation more intolerable than pain, except it is increased to great violence. Rumphius has also given an account of this bulb and its inhabitants, vol. vi. p. 120, where he mentions another ...

— A General History and Collection of Voyages and Travels, Vol. 13 • Robert Kerr

... or a bottle of hot water wrapped in cloth, towels wrung out of hot water, or even an electric light bulb, will ...

— Manual of Military Training - Second, Revised Edition • James A. Moss

... single unshaded electric bulb shone startlingly down to the bed, making plain the shadow of death even to an ...

— The City of Fire • Grace Livingston Hill

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