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Peristome

 - 3 dictionary results

per⋅i⋅stome

  [per-uh-stohm]
Use Peristome in a Sentence
–noun
1. Botany. the one or two circles of small, pointed, toothlike appendages around the orifice of a capsule or urn of mosses, appearing when the lid is removed.
2. Zoology. any of various structures or sets of parts that surround or form the walls of a mouth or mouthlike opening.
Origin:
1790–1800; < NL peristoma. See peri-, -stome

Related forms:
per⋅i⋅sto⋅mal, per⋅i⋅sto⋅mat⋅ic  [per-uh-stuh-mat-ik] , per⋅i⋅sto⋅mi⋅al, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To Peristome
per·i·stome   (pěr'ĭ-stōm')   
n.  

  1. Botany A fringe of toothlike appendages surrounding the mouth of a moss capsule.

  2. Zoology The area or parts around the mouth in certain invertebrates.

per'i·sto'mal (-stō'məl), per'i·sto'mi·al (-stō'mē-əl) 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: peri·stome
Pronunciation: 'per-&-"stOm
Function: noun
: the area surrounding the mouth or cytostome of a protozoan —peri·sto·mi·al /"per-&-'stO-mE-&l/ adjective
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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