rostellum
[ro-stel-uh m]
- Biology. any small, beaklike process.
- Botany. a beaklike modification of the stigma in many orchids.
- Zoology.
- a projecting part of the scolex in certain tapeworms.
- a part of the mouth in many insects, designed for sucking.
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Origin of rostellum
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for rostellum
Historical Examples
Anthera fere immersa, Rostellum integrum ut in omnibus glandula orbotis Pollinia 8.
I want to know whether anything beats in modification the rostellum of Catasetum.
More Letters of Charles Darwin Volume IICharles Darwin
Asa Gray's observations on the rostellum of Gymnadenia are very imperfect, yet worth looking at.
More Letters of Charles Darwin Volume IICharles Darwin
One has a rostellum without hooks, like the tni of the vegetable-feeders, the other has hooks like those of the carnivora.
Animal Parasites and MessmatesP. J. Van Beneden
So in other cases, but I have not completely traced (only seen) that going to the rostellum.
More Letters of Charles Darwin Volume IICharles Darwin
rostellum
- biology a small beaklike process, such as the hooked projection from the top of the head in tapeworms or the outgrowth from the stigma of an orchid
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Word Origin
C18: from Latin: a little beak, from rōstrum a beak
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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rostellum
(rŏ-stĕl′əm)- A small beaklike part, such as the hooked projection on the head of a tapeworm.
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The American Heritage® Stedman's Medical Dictionary
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