成熟は英語で
mature

英語の定義

mature
1. adj. Fully developed; grown up in terms of physical appearance, behaviour or thinking; ripe.
She is quite mature for her age.
2. adj. Brought to a state of complete readiness.
a mature plan
3. adj. Profound; careful.
The headmaster decided to expel the boy after a mature consideration.
4. adj. (medicine, obsolete) Come to, or in a state of, completed suppuration.
5. v. (intransitive, of food, especially fruit) To become mature; to ripen.
6. v. (intransitive) To gain experience or wisdom with age.
7. v. To make something mature.
8. v. (intransitive, finance) To reach the date when payment is due

maturity
1. n. The state of being mature, ready or ripe.
Some foods and drinks, like wine, only reach their full taste at maturity, which literally comes at a price
2. n. When bodily growth has completed and/or reproduction can begin.
The entire tank of guppies was in their maturity and ready to mate.
Some insect species reach sexual maturity well before their own bodily maturity
3. n. (finance, insurance) Date when payment is due.
The note was cashed at maturity.

maturation
1. n. The process of becoming mature.
2. n. (biology) The process of differentiation that produces the adult form of an organism.
3. n. (medicine) The process of maturating, or suppurating fully.