Adult definition is - fully developed and mature: grown-up. How to use adult in a sentence.
Adult definition: An adult is a mature, fully developed person. An adult has reached the age when they are | Meaning, pronunciation, translations and examples.
Biologically, an adult is a human or other organism that has reached sexual maturity. In human Definitions of adulthood are often inconsistent and contradictory; a person may be biologically an adult, and have adult behavior but still be.
Adult definition, having attained full size and strength; grown up; mature: an adult person, animal, or plant. See more.
adult definition: 1. a person or animal that has grown to full size and strength: 2. grown to full size and. Learn more.