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antheridium

[ an-thuh-rid-ee-uhm ]
/ ˌæn θəˈrɪd i əm /
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noun, plural an·ther·id·i·a [an-thuh-rid-ee-uh]. /ˌæn θəˈrɪd i ə/. Botany, Mycology.

a male reproductive structure producing gametes, occurring in ferns, mosses, fungi, and algae.

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Origin of antheridium

From New Latin, dating back to 1850–55; see origin at anther, -idium
an·ther·id·i·al, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for antheridium

antheridium
/ (ˌænθəˈrɪdɪəm) /

noun plural -ia (-ɪə)

the male sex organ of algae, fungi, bryophytes, and spore-bearing vascular plants, such as ferns, which produces antherozoids
antheridial, adjective
C19: from New Latin, diminutive of anthēra anther
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

Scientific definitions for antheridium

antheridium
[ ăn′thə-rĭdē-əm ]

Plural antheridia (ăn′thə-rĭdē-ə)

An organ in certain organisms that produces male gametes. Antheridia are found in many groups of organisms, including the bryophytes, ferns, ascomycete fungi, and some algae. Most gymnosperms and all angiosperms, however, have lost the antheridium, and its role is filled by the pollen grain. Compare archegonium.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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