Xenopus
Concise Oxford English Dictionary © 2008 Oxford University Press:
Xenopus /ˈzɛnəpəs/
▶noun the African clawed toad, used in embryological research and formerly in pregnancy testing as it produces eggs in response to substances in the urine of a pregnant woman. [Xenopus laevis.]
'Xenopus' also found in these Oxford entries:

