xenopus

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Related to Xenopuses: Xenurine, xerarch

xenopus

(zĕn′ə-pəs)
n.
Any of various aquatic, tongueless, clawed frogs of the genus Xenopus of southern Africa, certain species of which, especially the African clawed frog, are widely used for biological research.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

Xenopus

the African clawed toad that has been used to test for pregnancy in women. Injection of urine from a pregnant woman results in egg-laying in the toad.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005