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ha 1also hah (hä)
Used to express surprise, wonder, triumph, puzzlement, or pique.
2. Latin hoc anno (this year)
3. hour angle
1. an exclamation expressing derision, triumph, surprise, etc, according to the intonation of the speaker
2. (reiterated) a representation of the sound of laughter
(used as an exclamation of surprise, interrogation, suspicion, triumph, etc.)
[1250–1300; Middle English; see ha -ha1]
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|Noun||1.||HA - (astronomy) the angular distance of a celestial point measured westward along the celestial equator from the zenith crossing; the right ascension for an observer at a particular location and time of day|
astronomy, uranology - the branch of physics that studies celestial bodies and the universe as a whole
angular distance - the angular separation between two objects as perceived by an observer; "he recorded angular distances between the stars"