AHA

American Hearth Association; American Hospital Association.

Merriam-Webster Online Dictionary
aha (interjection)
- used to express surprise, triumph, or derision
AHA (noun)
- alpha hydroxy acid
Merriam-Webster Online Thesaurus
aha (interjection)
how surprising, doubtful, or unbelievable
SYNONYMS:
ah, aha, come on, fie, indeed, my word, pshaw, well, what, why
RELATED WORDS:
gee, gee whiz, ha, hello, hey, lo, oh; fiddlesticks, phooey, pooh; there; oops ( whoops woops), ugh; egad, gad, gadzooks [], the deuce, the devil, the dickens, zounds
AHA (Wikipedia)

AHA or aha may refer to: