WordReference Random House Learner's Dictionary of American English © 2020 a•dult /əˈdʌlt, ˈædʌlt/USA pronunciation
n. [countable]WordReference Random House Unabridged Dictionary of American English © 2020
adj. [usually: before a noun]
- Developmental Biologya person who is fully grown, developed, or of age:Only adults may purchase alcohol.
a•dult•hood, n. [uncountable]
- Developmental Biologyhaving attained full size and strength;
- intended only for adults;
not suitable for children:adult movies.
- of or like a fully grown, mature person:The teenager had a very adult expression on her face.
(ə dult′, ad′ult),USA pronunciation adj.
- having attained full size and strength;
mature:an adult person, animal, or plant.
- of, pertaining to, or befitting adults.
- intended for adults;
not suitable for children:adult entertainment.
- a person who is fully grown or developed or of age.
- a full-grown animal or plant.
- Lawmakinga person who has attained the age of maturity as specified by law.
- Latin adultus grown (past participle of adolēre to make grow), equivalent. to ad- ad- + ul- (identical with base al- in aliment, ol- in prolific) + -tus past participle suffix
- 1525–35; 1925–30 for def. 3;
Collins Concise English Dictionary © HarperCollins Publishers::
adult /ˈædʌlt; əˈdʌlt/ adj
- having reached maturity; fully developed
- of or intended for mature people: adult education
- regarded as suitable only for adults, because of being pornographic
Etymology: 16th Century: from Latin adultus, from adolēscere to grow up, from alēscere to grow, from alēre to feed, nourishˈadulthood n
- a person who has attained maturity; a grownup
- a mature fully grown animal or plant
- a person who has attained the age of legal majority (18 years for most purposes)
'adult' also found in these entries (note: many are not synonyms or translations):