Definition from Wiktionary, the free dictionary
Derived from hapan (“sour, acidic”).
- Any sour or acidic liquid: acid.
- (chemistry) A substance that can give a proton to another substance (Brønsted acid)
- (chemistry) A substance that can act as an electron pair donor (Lewis acid).
- (colloquial) A drunkard, sot
Declension of happo (type valo)