Definition of "estrus" [estrus]

• The periodic state of sexual excitement in the female of most mammals, excluding humans, that immediately precedes ovulation and during which the female is most receptive to mating; heat. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The term estrus comes from the Latin word for “frenzy,” since these same hormones also make her much more active, and sometimes more dominant and aggressive."
• "Still it is pretty obvious when you are “presenting” like a baboon in estrus …"
• "I'd suggest doe in estrus scent as this is the start of the rut."