testacean


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testacean

(tĕ-stā′shən)
n.
Any of various amoeboid protozoans having a hard external covering, found in soil and freshwater habitats.

tes·ta′cean adj.
References in periodicals archive ?
(52) He said there that testaceans occupy an intermediate position between animals and plants.
For this reason testaceans and mollusks and crustaceans (all of which are bloodless and have a cold physis) are especially generated in shallow parts of the sea and in river estuaries.
(57) Generation of Animals 3.11 clearly provides the argument announced in 1.21, which was exclusively concerned with testaceans as a category of ensouled entities intermediate between plants and animals.
So Aristotle may be saying here that in the sea, (59) where one would only expect to find aquatic animals, testaceans develop too, which closely resemble plants (properly belonging on land).