redia

[ ree-dee-uh ]

Phonetic (Standard)IPA

noun

, Zoology.

, plural re·di·ae [ree, -dee-ee].

a cylindrical larval stage of some trematodes, produced by a sporocyst and giving rise to daughter rediae or to cercariae.

redia

/ ˈriːdɪə /

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)

Origin of redia¹

First recorded in 1875–80; from New Latin, after Italian biologist F. Redi; -a ²

Origin of redia¹

C19: from New Latin, named after Francesco Redi (1629–97), Italian naturalist

This produces within itself numbers of a small creature which is called the Redia form.

The Redia has anteriorly a mouth leading into a muscular pharynx and thence into a ccal stomach.

The Cercari are developed from spherical masses of cells found in the body cavity of the Sporocyst or Redia.

The Cercari when fully developed leave the Sporocyst or Redia, and then their host, and become free.

April 25, 2024firkin

[fur-kin ]

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