Word Study
spermosphere
CIDE DICTIONARY
spermosphere, n. [Spermo- + sphere.].
A mass or ball of cells formed by the repeated division of a male germinal cell (spermospore), each constituent cell (spermoblast) of which is converted into a spermatozoid; a spermatogemma. [1913 Webster]
For further exploring for "spermosphere" in Webster Dictionary Online