Rostellum Definition

rŏ-stĕləm
rostella
noun
A sterile, flaplike modified stigma that separates the anthers from the stigmas in some orchids.
Webster's New World
A small, rounded projection bearing hooks on the head of certain tapeworms.
Webster's New World
A beak-shaped, sucking mouthpart in certain insects.
Webster's New World

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

The rostellum of the stigma of violets, or of the operculum of many mosses.
Wiktionary

(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.

Wiktionary
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Other Word Forms of Rostellum

Noun

Singular:
rostellum
Plural:
rostella

Origin of Rostellum

  • Latin diminutive of rōstrum beak rostrum

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Latin, diminutive of rostrum (“beak").

    From Wiktionary

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