planospore

[ plan-uh-spawr, -spohr ]
/ ˈplæn əˌspɔr, -ˌspoʊr /

noun Biology.

a zoospore.

Origin of planospore

First recorded in 1945–50; plano-2 + spore
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019