billion years

English - English

Definition of billion years in English English dictionary

b.y

Hyphenation

bil·lion years

Turkish pronunciation

bîlyın yırz

Pronunciation

/ˈbəlyən yərz/ /ˈbɪljən jɜrz/

Videos

... Every human breath is a ritual two and a half billion years old. ...

... By the time Earth emerges just over four and a half billion years ago, ...