The twins also usually share only one set of external genitalia.

There are surgical procedures which change the appearance of external female genitalia.

When the external genitalia appear to be in between, they are described as ambiguous.

Before the 1950s, assignment was based almost entirely on the appearance of the external genitalia.

It is designed to increase blood flow to the clitoris and external genitalia.

The external genitalia is usually female, although it can be ambiguous.

You see the external genitalia, up there in the crotch?

The last segments of the abdomen form the external genitalia.

The external genitalia can be used as a means for you to see if it's a boy or a girl.

Somehow, though, he couldn't bring himself to argue in the matter of external genitalia; it was a little too personal, or something.