English Dictionary: bulb | by the DICT Development Group |
3 results for bulb | |
From WordNet (r) 3.0 (2006) [wn]: | |
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From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Bulb \Bulb\ (b[ucr]lb), n. [L. bulbus, Gr. bolbo`s: cf. F. bulbe.] 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 [bd]root,[b8] 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. 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. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Bulb \Bulb\, v. i. To take the shape of a bulb; to swell. |