An asexual spore of some algae and fungi that moves by means of flagella

Wikipedia Word definitions in Wikipedia
A zoospore is a motile asexual spore that uses a flagellum for locomotion . Also called a swarm spore, these spores are created by some algae , bacteria and fungi to propagate themselves.

WordNet Word definitions in WordNet
n. an asexual spore of some algae and fungi that moves by means of flagella

Wiktionary Word definitions in Wiktionary
n. A motile asexual spore of some algae and fungus.

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Swarmspore \Swarm"spore`\, n. (Bot.) One of innumerable minute, motile, reproductive bodies, produced asexually by certain alg[ae] and fungi; a zo["o]spore. (Zo["o]l.) One of the minute flagellate germs produced by the sporulation of a protozoan; -- called ...