Entry 1 sense Webster, 1913 Microzoospore /(mī`krō̇*zō"ō̇*spōr)/ · Mi·cro·zo·o·spore · IPA 01 n. A small motile spore furnished with two vibratile cilia, found in certain green algae. 1. A small motile spore furnished with two vibratile cilia, found in certain green algae.(Bot.)