Definition

Relating to the period in which female mammals are sexually receptive and fertile.

Example

The female dog is in estrous and ready to mate.

Conversation

Did you know that some animals have an estrous cycle?

Yeah, I've heard about that! It’s interesting how it affects their behavior.

Exactly! I was reading that it can influence their mating habits too.

That makes sense. Nature has some pretty fascinating ways of ensuring reproduction.

Synonyms & Antonyms

Root Explanation

Estrous is derived from the Greek word "oistros" (meaning frenzy or passion), which refers to the period of sexual receptivity in female mammals. The suffix "-ous" (meaning full of) indicates a state or condition. Therefore, "estrous" describes a condition full of sexual excitement or receptivity.

Memory Tip

Think of the Greek word for frenzy ('oistros') to remember that 'estrous' refers to a state of sexual excitement.

Visually Confused Words