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[per-uh-thee-shee-uh m, -shuh m, -see-uh m] /ˌpɛr əˈθi ʃi əm, -ʃəm, -si əm/
noun, plural perithecia
[per-uh-thee-shee-uh, -shuh, -see-uh] /ˌpɛr əˈθi ʃi ə, -ʃə, -si ə/ (Show IPA).
the fruiting body of ascomycetous fungi, typically a minute, more or less completely closed, globose or flask-shaped body enclosing the asci.
Origin of perithecium
1825-35; < New Latin; see peri-, thecium
Related forms
perithecial, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for perithecia


noun (pl) -cia (-sɪə)
(botany) a flask-shaped structure containing asci that are discharged from an apical pore; a type of ascocarp
Word Origin
C19: from New Latin, from peri- + Greek thēkē case
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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perithecia in Science
  (pěr'ə-thē'shē-əm, -sē-əm)   
Plural perithecia
A small flask-shaped fruiting body in some ascomycete fungi that encloses the asci (spore sacs).
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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