a parasitic larva of flukes that has simple locomotory organs, pharynx, and intestine and gives rise either to other rediae or to a different larva (the cercaria)
Word origin
C19: from New Latin, named after Francesco Redi (1629–97), Italian naturalist
redia in American English
(ˈridiə)
nounWord forms: pluralˈrediˌae (ˈridiˌi)
a larval stage of many trematodes, usually parasitic in a host snail, produced by a sporocyst and producing daughter rediae or cercariae