The Open Dictionary

aha

noun

UK/ˌeɪ.eɪtʃˈeɪ/
US/ˌeɪ.eɪtʃˈeɪ/

Definitions of aha noun

  1. CountableUncountable

    An abbreviation for alpha-hydroxy acid, a type of organic acid used in certain products to remove dead skin cells and improve the skin's appearance, making it look healthy, attractive, and youthful.

    • Cosmetic companies often add AHAs to their products to help improve skin texture.

    • Dermatologists may recommend using products containing AHAs to treat acne and reduce wrinkles.

    • This exfoliating treatment contains a blend of AHAs that gently remove dead skin.

exclamation

UK/ɑːˈhɑː/
US/ɑːˈhɑː/

Definitions of aha exclamation

  1. An exclamation used to express sudden understanding or discovery.

    • Aha! I finally understand the lyrics to that song!

    • Aha, I've found my glasses; they were on my head all along.

    • Aha! That's the answer to the puzzle!