| Krause's end bulbs | Nerve terminals in skin, mouth, conjunctiva, and other parts, consisting of a laminated capsule of connective tissue enclosing the terminal, branched, convoluted ending of an afferent nerve fibre; generally believed to be sensitive to cold. Synonym: corpuscula bulboidea, bulboid corpuscles. (05 Mar 2000) |
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| sea onion | <botany> The officinal squill. See Squill. Source: Websters Dictionary (01 Mar 1998) |
| onion | <botany> A liliaceous plant of the genus Allium (A.cepa), having a strong-flavored bulb and long hollow leaves; also, its bulbous root, much used as an article of food. The name is often extended to other species of the genus. <zoology> Onion fish, a dipterous insect whose larva feeds upon the onion; especially, Anthomyia ceparum and Ortalis flexa. Welsh onion. Origin: F. Ognon, fr. L. Unio oneness, unity, a single large pearl, an onion. See One, Union. Source: Websters Dictionary (01 Mar 1998) |
| onion bodies | An obsolete term for epithelial nest. (05 Mar 2000) |
| onion bulb neuropathy | Designation for any of several demyelinating polyneuropathies in which the nerves are enlarged, due to onion bulb formation-whorls of overlapping Schwann cell processes encircling bare medullated axons, e.g., progressive hypertrophic polyneuropathy. See: hypertrophic interstitial neuropathy. (05 Mar 2000) |