"Adult" in Engpsh can be pronounced as "əˈdʌlt".
It comes from the Latin word "adultus", which means "grown up" or "fully developed". In Engpsh, "adult" typically refers to a person who has reached the age of majority and is legally recognized as an adult.
Examples:
She is now considered an adult since she turned 18.
(她现在已经18岁了，被认为是成年人。)
The store only sells products for adults.
(这家商店只卖成人用品。)