in heat

*in heat

in a period of sexual excitement; in estrus. (Estrus is the period of time in which females are most willing to breed. This expression is usually used for animals. It has been used for humans in a joking sense. *Typically: be ~; get [into] ~; go [into] ~.) Our dog is in heat. She goes into heat every year at this time.

in heat

In a state of sexual excitement immediately preceding ovulation. For example, Our cat's in heat so we have to keep her inside. This expression applies to most female mammals and indicates the period when the animal is fertile and most receptive to mating. [Mid-1700s]

Common Names:

Name	Pronounced	Usage
Teodora	te-o-DAW-rah (Italian), te-o-DHO-rah (Spanish), te-aw-DAW-rah (Polish)	Italian, Spanish, Portuguese, Swedish, Romanian, Polish, Bulgarian, Macedonian, Serbian
Cicero	SIS-ə-ro (English)	Ancient Roman
Alfred	AL-frəd (English), al-FRED (French), AHL-fret (German, Polish), AHL-frət (Dutch)	English, French, Swedish, Norwegian, Danish, German, Polish, Dutch
Andreas	ahn-DRE-ahs (German, Swedish), ahn-DRHAY-ahs (Dutch)	German, Greek, Swedish, Norwegian, Danish, Dutch, Welsh, Ancient Greek, Biblical Latin, Biblical Gre
Diane	dee-AHN (French), die-AN (English)	French, English
Charles	[tʃɑ:lz]