ROSTELLUM

Etymology

Noun

rostellum (plural rostella or rostellums)

A small beak-like process or extension; a small rostrum.

(botany) A projecting part of the column in the flower of an orchid that separates the male stamen from the female gynoecium.

(biology) A retractable protruding part at the anterior end of a soft-bodied tapeworm; the scolex from which it protrudes is often armed with hooks which serve to keep it in place attached to the host.

Source: Wiktionary


Ros*tel"lum, n.; pl. Rostella. Etym: [L. See Rostel.]

Definition: A small beaklike process or extension of some part; a small rostrum; as, the rostellum of the stigma of violets, or of the operculum of many mosses; the rostellum on the head of a tapeworm.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

20 November 2024

ENEMA

(noun) an injection of a liquid through the anus to stimulate evacuation; sometimes used for diagnostic purposes


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