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rostellum

 - 4 dictionary results

ros⋅tel⋅lum

  [ro-stel-uhm]
Use rostellum in a Sentence
–noun, plural ros⋅tel⋅la  [ro-stel-uh] .
1. Biology. any small, beaklike process.
2. Botany. a beaklike modification of the stigma in many orchids.
3. Zoology.
a. a projecting part of the scolex in certain tapeworms.
b. a part of the mouth in many insects, designed for sucking.
Origin:
1750–60; < NL; L: little beak, snout, dim. of rōstrum snout (see rostrum ); for formation, see castellum
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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ros·tel·lum   (rŏ-stěl'əm)   
n.   pl. ros·tel·la (rŏ-stěl'ə)
A small beaklike part, such as a projection on the stigma of an orchid, a tubular mouthpart on some insects, or the hooked projection on the head of a tapeworm.

[Latin, diminutive of rōstrum, beak; see rostrum.]
ros·tel'lar adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: ros·tel·lum
Pronunciation: rä-'stel-&m
Function: noun
: an anterior prolongation of the head of a tapeworm often bearinghooks
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

rostellum ros·tel·lum (rŏ-stěl'əm)
n. pl. ros·tel·la (rŏ-stěl'ə)
A small beaklike part, such as the hooked projection on the head of a tapeworm.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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