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n. pl. an·ther·id·i·a (-ē-ə)
A sperm-producing organ occurring in seedless plants, fungi, and algae.

[New Latin : anthēra, anther; see anther + -idium, diminutive suff. (from Greek -idion).]

an′ther·id′i·al adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(ˌænθəˈrɪdɪəm) or


n, pl -ridia (-ˈrɪdɪə) or -rids
(Botany) the male sex organ of algae, fungi, bryophytes, and spore-bearing vascular plants, such as ferns, which produces antherozoids
[C19: from New Latin, diminutive of anthēra anther]
ˌantherˈidial adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌæn θəˈrɪd i əm)

n., pl. -ther•id•i•a (-θəˈrɪd i ə)
a male reproductive structure producing gametes, occurring in ferns, mosses, fungi, and algae.
[1850–55; < New Latin]
an`ther•id′i•al, adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.antheridium - the male sex organ of spore-producing plants; produces antherozoids; equivalent to the anther in flowers
reproductive structure - the parts of a plant involved in its reproduction
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
The activity of the antheridium was determined by visually inspecting anther dehiscence every hour and stigma receptivity was estimated by direct observation of pollen adhesion to the surface.
The development of the antheridium (male multicellular sex organ) and the archegonium (female multicellular sex organ) were important advancements in the success of land plants.