an·ther·id·i·um 
(ăn′thə-rĭdē-əm)
(ăn′thə-rĭdē-əm)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·idi·al adj.