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8 Words That Are Older Than You Think

anestrus

[an-es-truh s] /ænˈɛs trəs/
noun, Zoology
1.
(of a female mammal) the interval of sexual inactivity between two periods of heat or rut.
Also, anoestrus.
Origin
1925-1930
1925-30; an-1 + estrus
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for anestrus
  • Females experienced a seasonal anestrus during the late summer and early fall.
British Dictionary definitions for anestrus

anestrus

/ænˈiːstrəs/
noun
1.
a variant spelling (esp US) of anoestrus
Derived Forms
anestrous, adjective

anoestrus

/ænˈiːstrəs/
noun
1.
a period of sexual inactivity between two periods of oestrus in many mammals
Derived Forms
anoestrous, (US) anestrous, adjective
Word Origin
C20: New Latin; see an-, oestrus
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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8
10
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