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Definition of Ha
1. Noun. (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.
Category relationships: Astronomy, Uranology
Generic synonyms: Angular Distance
Definition of Ha
1. interj. An exclamation denoting surprise, joy, or grief. Both as uttered and as written, it expresses a great variety of emotions, determined by the tone or the context. When repeated, ha, ha, it is an expression of laughter, satisfaction, or triumph, sometimes of derisive laughter; or sometimes it is equivalent to "Well, it is so."
Definition of Ha
1. a sound of surprise [n -S]
Medical Definition of Ha
1. An exclamation denoting surprise, joy, or grief. Both as uttered and as written, it expresses a great variety of emotions, determined by the tone or the context. When repeated, ha, ha, it is an expression of laughter, satisfaction, or triumph, sometimes of derisive laughter; or sometimes it is equivalent to "Well, it is so." "Ha-has, and inarticulate hootings of satirical rebuke." (Carlyle) (16 Mar 1998)