zoosporeEnglishOxford New American Dictionaryzoospore /ˈzōəˌspôr, ˈzoʊəˌspɔr / ▸ noun Biology a spore of certain algae, fungi, and protozoans, capable of swimming by means of a flagellum. Also called swarmer. – DERIVATIVES zoosporic /-ˈspɔːrɪk/ adjective