Adolescence /ˌæd

natural /ˈnætʃ. ə r. ə l/ /-ɚ-/ adjective NOT ARTIFICIAL
1. as found in nature and not involving anything made or done by people
a natural substance
People say that breast-feeding is better than bottle-feeding because it's more natural.
He died from natural causes (= because he was old or ill) .
Floods and earthquakes are natural disasters .
2. describes an ability or characteristic that you were born with
natural beauty
a natural talent for sports
She's a natural blonde (= Her hair is not artificially made a lighter colour) .
3. describes food or drink which is pure and has no chemical substances added to it and is therefore thought to be healthy
natural mineral water
natural ingredients
4. someone's natural mother/father/parent
a parent who caused someone to be born, although they might not be their legal parent or the parent who raised them