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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.


(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


(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.
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