from The American Heritage® Dictionary of the English Language, 4th Edition
- n. One who has attained maturity or legal age.
- n. Biology A fully grown, mature organism.
- adj. Fully developed and mature.
- adj. Relating to, intended for, or befitting adults: adult education.
- adj. Containing or dealing in explicitly sexual material; pornographic: adult movies; adult bookstores.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A fully grown human or animal.
- n. A person who lives outside the parental home.
- adj. Of a human or animal, fully grown.
- adj. Intended for adults rather than children.
- adj. Containing material of an explicit sexual nature
from the GNU version of the Collaborative International Dictionary of English
- adj. Having arrived at maturity, or to full size and strength; matured
- n. A person, animal, or plant grown to full size and strength; one who has reached maturity.
from The Century Dictionary and Cyclopedia
- Having arrived at mature years, or attained full size and strength: as, an adult person, animal, or plant.
- Pertaining or relating to adults; suitable for an adult: as, adult age; an adult school.
- n. A person or (sometimes) an animal grown to full size and strength; one who has reached the age of manhood or womanhood.
- n. Specifically: In civil law, a male infant who has attained the age of fourteen, or a female infant who has attained the age of twelve.
- n. In common law, one of the full age of twenty-one.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a fully developed person from maturity onward
- n. any mature animal
- adj. designed to arouse lust
- adj. (of animals) fully developed
From Latin adultus, past participle of adolēscere, to grow up; see adolescent.(American Heritage® Dictionary of the English Language, Fourth Edition)
French adulte, Latin adultus ("grown up"), past participle of adolescere ("to grow up"); see adolescent. (Wiktionary)