An adult is a human or other animal that has reached full growth. In human context, the term adult has meanings associated with social and legal concepts. In contrast to a "minor", a legal adult is a person who has attained the age of majority and is therefore regarded as independent, self-sufficient, and responsible. They may also be regarded as a "major". The typical age of attaining legal adulthood is 18, although definition may vary by legal rights, country, and psychological development. Human adulthood encompasses psychological adult development. Definitions of adulthood are often inconsistent and contradictory; a person may be biologically an adult, and have adult behavior, but still be treated as a child if they are under the legal age of majority. Conversely, one may legally be an adult but possess none of the maturity and responsibility that may define an adult character.

Read more in the app

Surprising Discovery: MIT Neuroscientists Find That Adult Brain Is Filled With Millions of “Silent Synapses”

A Startling Difference: Adult Children Four Times More Likely To Be Estranged From Dad Than Mom

A Biological Wonder: Harvard Researchers Discover Embryonic Origins of Adult Pluripotent Stem Cells

Study: Without makeup, adult men found teenage girls' faces more attractive than adult women's faces.

Adult mouse brains are teeming with ‘silent synapses’

Embryonic origins of adult pluripotent stem cells discovered

Silent synapses are abundant in the adult brain

What age do you really become an adult? And why it’s vital to know

Adult ADHD Linked to a Greatly Increased Risk of Numerous Heart Diseases

Do financial incentives increase adult vaccinations? A view of lessons learned

Adult Brain Structure Is Not Fixed: Scientists Discover Depression Treatment Increases Brain Connectivity

Positive childhood experiences of blue spaces linked to better adult well-being

Giving milk to Adult cats might do more harm than good since cats often lose their tolerance for lactose when they get older. Milk consumption can cause digestive issues in cats and lead to symptoms such as diarrhea or vomiting

Eye-opening discovery about adult brain's ability to recover vision

Adult ADHD linked to elevated risk of cardiovascular diseases

Antibiotics given in infancy may have adverse impact on adult gut health

Largest Aggregation Of Adult Tiger Sharks In The World Found

Psilocybin-Assisted Psychotherapy vs Placebo in the Treatment of Adult Patients With Alcohol Use Disorder

Access to paid sick leave linked to lower mortality rate among US adult workers

New Psychological Research Teaches An Important Superpower: How To Be True To Yourself As A Young Adult