re·​dia ˈrē-dē-ə How to pronounce redia (audio)
plural rediae ˈrē-dē-ˌē How to pronounce redia (audio) also redias
: a larval form of a digenetic trematode (such as a liver fluke) that is produced within a sporocyst, has a mouth, pharynx, and gut, and contains cells which give rise to other rediae or to cercariae see also redial entry 3

Word History


New Latin, from Francesco Redi †1698? Italian naturalist

First Known Use

1877, in the meaning defined above

Time Traveler
The first known use of redia was in 1877

Dictionary Entries Near redia

Cite this Entry

“Redia.” Dictionary, Merriam-Webster, Accessed 30 May. 2024.

Medical Definition


re·​dia ˈrēd-ē-ə How to pronounce redia (audio)
plural rediae -ē-ˌē How to pronounce redia (audio) also redias
: a larva produced within the sporocyst of many trematodes that produces another generation of larvae like itself or develops into a cercaria
redial adjective
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