What is Oestriol?

Oestriol definition and meaning on Dictionary terms:
a class or group of individual objects, people, animals, etc., of the same nature or character, or classified together because they have traits in common; category: Our dog is the same kind as theirs.
nature or character as determining likeness or difference between things: These differ in degree rather than in kind.
a person or thing as being of a particular character or class: He is a strange kind of hero.
a more or less adequate or inadequate example of something; sort: The vines formed a kind of roof.
Archaic. the nature, or natural disposition or character. manner; form.

Obsolete. gender; sex.


reference: https://www.dictionary.com/browse/oestriol