estrus
Multiple Entries:estrus oestrus
Concise Oxford English Dictionary © 2008 Oxford University Press:
estrus etc.
▶noun US spelling of oestrus etc.
Concise Oxford English Dictionary © 2008 Oxford University Press:
oestrus /ˈiːstrəs, ˈɛstrəs/ (US estrus)
▶noun a recurring period of sexual receptivity and fertility in many female mammals; heat.
– derivatives
oestrous adjective.
oestrous adjective.
– origin C17: from Gk oistros ‘gadfly or frenzy’.
'estrus' also found in these Oxford entries:

