ascus

[ as-kuhs ]

/ ˈæs kəs /

noun, plural as·ci [as-ahy, -kahy, -kee]. /ˈæs aɪ, -kaɪ, -ki/. Mycology.

the sac in ascomycetes in which the sexual spores are formed.

Origin of ascus

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

Words nearby ascus

ascription, ascriptive, ASCS, ASCU, Asculum, ascus, ASCVD, ASD, ASDE, asdic, ASE

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for ascus

Some of these are indefinite in the number contained in an ascus, although the majority are eight, and a few less.
Fungi: Their Nature and Uses|Mordecai Cubitt Cooke
The single nucleus divides by three successive divisions to form eight nuclei lying free in the protoplasm of the ascus.
Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3|Various
By crushing the ripe spore fruit, these spores still enclosed in the mother cell (ascus) may be forced out (Fig. 39, H).
Elements of Structural and Systematic Botany|Douglas Houghton Campbell
In this group the spores are formed in minute club-shaped sacs, known as asci (singular, ascus).
The Mushroom, Edible and Otherwise|M. E. Hard

The term sporidia he limits to spores produced or enclosed in an ascus, as in the Ascomycete.
Student's Hand-book of Mushrooms of America, Edible and Poisonous|Thomas Taylor

British Dictionary definitions for ascus

ascus

/ (ˈæskəs) /

noun plural asci (ˈæsaɪ, ˈæskaɪ)

a saclike structure that produces (usually) eight ascospores during sexual reproduction in ascomycetous fungi such as yeasts and mildews

Word Origin for ascus

C19: from New Latin, from Greek askos bag

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for ascus

ascus

[ ăs′kəs ]

n. pl. as•ci (ăs′ī′, -kī′)

A membranous, often club-shaped structure in which typically eight spores are formed through sexual reproduction of ascomycetes.

Scientific definitions for ascus

ascus

[ ăs′kəs ]

Plural asci (ăs′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.

单词	ascus
释义	ascus [ as-kuhs ] / ˈæs kəs / noun, plural as·ci [as-ahy, -kahy, -kee]. /ˈæs aɪ, -kaɪ, -ki/. Mycology. the sac in ascomycetes in which the sexual spores are formed. Origin of ascus 1820–30; <New Latin <Greek askós bag, sac Words nearby ascus ascription, ascriptive, ASCS, ASCU, Asculum, ascus, ASCVD, ASD, ASDE, asdic, ASE Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for ascus Some of these are indefinite in the number contained in an ascus, although the majority are eight, and a few less. Fungi: Their Nature and Uses\|Mordecai Cubitt Cooke The single nucleus divides by three successive divisions to form eight nuclei lying free in the protoplasm of the ascus. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3\|Various By crushing the ripe spore fruit, these spores still enclosed in the mother cell (ascus) may be forced out (Fig. 39, H). Elements of Structural and Systematic Botany\|Douglas Houghton Campbell In this group the spores are formed in minute club-shaped sacs, known as asci (singular, ascus). The Mushroom, Edible and Otherwise\|M. E. Hard The term sporidia he limits to spores produced or enclosed in an ascus, as in the Ascomycete. Student's Hand-book of Mushrooms of America, Edible and Poisonous\|Thomas Taylor British Dictionary definitions for ascus ascus / (ˈæskəs) / noun plural asci (ˈæsaɪ, ˈæskaɪ) a saclike structure that produces (usually) eight ascospores during sexual reproduction in ascomycetous fungi such as yeasts and mildews Word Origin for ascus C19: from New Latin, from Greek askos bag Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Medical definitions for ascus ascus [ ăs′kəs ] n. pl. as•ci (ăs′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. Scientific definitions for ascus ascus [ ăs′kəs ] Plural asci (ăs′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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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