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  1. ADULT Definition & Meaning - Merriam-Webster

    Jun 17, 2026 · The meaning of ADULT is fully developed and mature : grown-up. How to use adult in a sentence.

  2. Adult - Wikipedia

    An adult is an animal that has reached full growth. [1] The biological definition of adult is an organism that has reached sexual maturity and thus capable of reproduction. In the human context, the term …

  3. ADULT | definition in the Cambridge English Dictionary

    ADULT meaning: 1. a person or animal that has grown to full size and strength: 2. being, involving, or relating…. Learn more.

  4. adult, adj. & n. meanings, etymology and more | Oxford English …

    adult, adj. & n. meanings, etymology, pronunciation and more in the Oxford English Dictionary

  5. Adult - Definition, Meaning & Synonyms | Vocabulary.com

    Adult is noun and an adjective, both of which refer to something mature, no longer a child. A full-grown person is called an adult: they can vote, rent cars, and choose to eat sugary cereal for dinner every …

  6. Adult - definition of adult by The Free Dictionary

    Define adult. adult synonyms, adult pronunciation, adult translation, English dictionary definition of adult. n. 1. One who has attained maturity or legal age. 2. Biology A fully grown, mature organism. adj. 1. …

  7. adult - Wiktionary, the free dictionary

    Jun 17, 2026 · Adult admission is €14, children under 12 pay €5, and children under 6 go free. You get a 10% discount if you book online. 2012, Deron R. Hicks, Secrets of Shakespeare's Grave, Houghton …

  8. adult - WordReference.com Dictionary of English

    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 n a person who has …

  9. ADULT - Definition & Translations | Collins English Dictionary

    Discover everything about the word "ADULT" in English: meanings, translations, synonyms, pronunciations, examples, and grammar insights - all in one comprehensive guide.

  10. ADULT - Definition & Meaning - Reverso English Dictionary

    adult definition: person who is fully grown or developed. Check meanings, examples, usage tips, pronunciation, domains, and related words. Discover expressions like "adult body", "adult male", …