Hypertext Webster Gateway: "improvisation"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Improvisation \Im*prov`i*sa"tion\, n. [Cf. F. improvisation.]
1. The act or art of composing and rendering music, poetry,
and the like, extemporaneously; as, improvisation on the
organ.
2. That which is improvised; an impromptu.
From WordNet (r) 1.7 (wn)
improvisation
n 1: an unplanned expedient [syn: {temporary expedient}]
2: a performance given without planning or preparation [syn: {extemporization},
{extemporisation}]
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