Adulthood

An adult is an animal that has reached full growth. The biological definition of adult is an organism that has reached sexual maturity and thus capable of reproduction.

threshold of adulthood as it pertains to law

portion of a life cycle in which an organism is capable of sexual reproduction

In Islamic legal terminology, bāligh (, adult) or mukallāf (, responsible) or muhallāq (, tendril, mentally matured) or murāhiq (, adolescent) or muhtalim (, pubescent) refers to someone who has reached maturity or puberty, and has full responsibility under Islamic law.

the neurobiological condition of attention deficit hyperactivity disorder (ADHD) in adults

A kidult is an adult whose interests or media consumption is traditionally seen as more suitable for children. It can also mean a parent who acts childishly with their children and does not take on their duties as a disciplinarian.

worldwide study by the Organisation for Economic Co-operation and Development

REDIRECT Adult

Adultcentrism is the exaggerated egocentrism of adults, including the belief that an adult perspective is inherently better (when compared to that of children). It is used to describe the conditions facing children and youth in schools, homes, and community settings; however, adultcentrism is not always based on a notion of being good or bad, in contrast to adultism.