Definition

The outer layer that surrounds the embryo in certain animals, including reptiles, birds, and mammals, and helps in forming the placenta in mammals.

Example

The chorion plays a crucial role in the development of the embryo by providing nutrients and oxygen.

Conversation

Did you know the chorion plays a crucial role in embryo development?

Really? I didn't realize it was that important.

Yeah, it's fascinating how it contributes to forming the placenta in mammals.

That's pretty cool! Biology has so many interesting details.

Synonyms & Antonyms

Root Explanation

Chorion → It is derived from the Greek word "chorion" (χόριον), meaning membrane or skin. In biological contexts, it refers to the outermost fetal membrane in mammals, which surrounds the embryo and contributes to the formation of the placenta.

Memory Tip

Think of the Greek word for membrane ('chorion') to remember that 'chorion' refers to the outer membrane surrounding an embryo.

Visually Confused Words