The Collaborative International Dictionary
Microzoospore
Microzoospore \Mi`cro*zo"["o]*spore\ (m[imac]`kr[-o]*z[=o]"[-o]*sp[=o]r), n. [Micro- + zo["o]spore.] (Bot.) A small motile spore furnished with two vibratile cilia, found in certain green alg[ae].
Wiktionary
microzoospore
n. (context botany English) A small motile spore furnished with two vibratile cilium, found in certain green algae.