Ha Definition

interjection
Used variously to express surprise, wonder, triumph, anger, etc.
Webster's New World

A representation of laughter.

Ha, ha, ha! That’s funny.
Wiktionary

An exclamation of triumph or discovery.

Ha! Checkmate!
Wiktionary
abbreviation
Hectare(s)
Webster's New World
Hoc anno (this year)
American Heritage
Hour angle.
American Heritage

(UK, colloquial) Abbreviated form of half.

Wiktionary
noun
The sound of this exclamation or of a laugh.
Webster's New World
Synonyms:
symbol
Hahnium.
Webster's New World
verb
(archaic) Alternate spelling of a4
Wiktionary
(archaic) Alternate spelling of a ("have")
Wiktionary

Origin of Ha

  • Abbreviation of half

    From Wiktionary