asci

[as-ahy]
noun
plural of ascus.
Dictionary.com Unabridged

ascus

[as-kuhs]
noun, plural asci [as-ahy, -kahy, -kee] . Mycology.
the sac in ascomycetes in which the sexual spores are formed.

Origin:
1820–30; < New Latin < Greek askós bag, sac

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
asci (ˈæsaɪ, ˈæskaɪ)
 
n
the plural of ascus

ascus (ˈæskəs)
 
n , pl asci
a saclike structure that produces (usually) eight ascospores during sexual reproduction in ascomycetous fungi such as yeasts and mildews
 
[C19: from New Latin, from Greek askos bag]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

ascus
"sac in certain fungi," 1830, Mod.L., from Gk. askos "leather bag, wine skin," of unknown origin.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

ascus as·cus (ās'kəs)
n. pl. as·ci (ās'ī', -kī')
A membranous, often club-shaped structure in which typically eight spores are formed through sexual reproduction of ascomycetes.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
ascus   (ās'kəs)  Pronunciation Key 
Plural asci (ās'ī', -kī')
A membranous, often club-shaped structure inside which ascospores are formed through sexual reproduction in species of the fungi known as ascomycetes. The ascus is unique to ascomycetes and distinguishes them from other kinds of fungi. Asci are formed when two hyphae that are sexually compatible conjugate. Each ascus typically develops eight ascospores. Asci swell at maturity until they burst, shooting the ascospores into the air.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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FOLDOC
Computing Dictionary

ASCI definition

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Did you mean ASCII?

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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American Heritage
Abbreviations & Acronyms
ASCI
  1. Accelerated Strategic Computing Initiative

  2. American Society of Clinical Investigation

The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Encyclopedia Britannica
Encyclopedia

asci

a saclike structure produced by fungi of the phylum Ascomycota (sac fungi) in which sexually produced spores (ascospores), usually four or eight in number, are formed. Asci may arise from the fungal mycelium (the filaments, or hyphae, constituting the organism) without a distinct fruiting structure, as in the leaf curl fungi; it may arise within a fruiting structure (ascocarp) that may be exposed, as in the molds and powdery mildew fungi; or it may be imbedded in a compact structure (stroma), as in the ergot and black knot fungi. In the case of yeasts, a single cell converts to an ascus.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences for asci
These asci are embedded in an ascocarp, or fruiting body, of the fungus.
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