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Medical Dictionary

bulb

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noun \ˈbəlb\

Medical Definition of bulb

  1. 1:  a rounded dilation or expansion of something cylindrical <the bulb of a thermometer>; especially :  a rounded or pear-shaped enlargement on a small base <the bulb of an eyedropper>

  2. 2:  a rounded part: asa:  a rounded enlargement of one end of a part—see bulb of the penis, bulb of the vestibule, end bulb, hair bulb, olfactory bulbb:  medulla oblongata; broadly :  the hindbrain exclusive of the cerebellumc:  a thick-walled muscular enlargement of the pharynx of certain nematode worms





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