fantasia Meaning, Definition & Usage

  1. noun a musical composition of a free form usually incorporating several familiar themes

WordNet

Fan*ta"si*a noun
Etymology
It. See Fancy.
Definitions
  1. (Mus.) A continuous composition, not divided into what are called movements, or governed by the ordinary rules of musical design, but in which the author's fancy roves unrestricted by set form.

Webster 1913