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From our dictionary:
1. a style of architecture and decoration, originating in France about 1720, evolved from Baroque types and distinguished by its elegant refinement in using different materials for a delicate overall effect and by its ornament of shellwork, foliage, etc.
2. a homophonic musical style of the middle 18th century, marked by a generally superficial elegance and charm and by the use of elaborate ornamentation and stereotyped devices.
1. (cap.) Fine Arts.
a. noting or pertaining to a style of painting developed simultaneously with the rococo in architecture and decoration, characterized chiefly by smallness of scale, delicacy of color, freedom of brushwork, and the selection of playful subjects as thematic material.
b. designating a corresponding style of sculpture, chiefly characterized by diminutiveness of Baroque forms and playfulness of theme.
2. of, pertaining to, in the manner of, or suggested by rococo architecture, decoration, or music or the general atmosphere and spirit of the rococo: rococo charm.
3. ornate or florid in speech, literary style, etc.