Bulb

[bʌlb]

解释:

(noun.) a rounded part of a cylindrical instrument (usually at one end); 'the bulb of a syringe'.

(noun.) a rounded dilation or expansion in a canal or vessel or organ.

(noun.) a modified bud consisting of a thickened globular underground stem serving as a reproductive structure.

(noun.) anything with a round shape resembling a teardrop.

凯瑟琳整理--From WordNet

解释:

(n.) 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.

(n.) A name given to some parts that resemble in shape certain bulbous roots; as, the bulb of the aorta.

(n.) 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.

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

校对:琳达

同义词及近义词：

n. [1]. (Bot.) Scaly bud (like the onion and the tulip).[2]. Spherical protuberance.

古斯塔夫校对

解释:

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.

厄玛编辑