Bulb of the eye

Bulb of the eye
Bulb Bulb (b[u^]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. [1913 Webster]

2. (Anat.) A name given to some parts that resemble in shape certain bulbous roots; as, the bulb of the aorta. [1913 Webster]

{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. [1913 Webster]

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. [1913 Webster]

3. a {light bulb}. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

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  • Bulb of the spinal cord — Bulb Bulb (b[u^]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 …   The Collaborative International Dictionary of English

  • Bulb — (b[u^]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 …   The Collaborative International Dictionary of English

  • Bulb of a hair — Bulb Bulb (b[u^]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 …   The Collaborative International Dictionary of English

  • Bulb of a tooth — Bulb Bulb (b[u^]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 …   The Collaborative International Dictionary of English

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  • bulb — 1. Any globular or fusiform structure. SYN: bulbus [TA]. 2. A short, vertical underground stem of plants, such as onion and garlic. [L. bulbus, a bulbous root] aortic b. [TA] the dilated first part of the aorta containing the aort …   Medical dictionary

  • eye dropper — dropper drop per, n. 1. One who, or that which, drops. Specif.: (Fishing) A fly that drops from the leader above the bob or end fly. [1913 Webster] 2. A dropping tube, usually of glass or plastic with a narrow opening at the tip and a rubber bulb …   The Collaborative International Dictionary of English

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