Lewis & Short

exornātĭo, ōnis, f. [exorno], an adorning, decorating, embellishing.

  1. I. Lit.: quae ad lavationem, quae ad exornationem pertinerent, to the toilet, Col. (Cic. Oecon.?) 12, 3, 2.
  2. II. Trop., of speech, embellishment.
    1. A. In gen.: ipsa inventa exponentur simpliciter sine ulla exornatione (corresp. to expolitio), Cic. Inv. 2, 3 fin.: verborum et sententiarum, Auct. Her. 4, 13, 18.
    2. B. In partic., as a figure of speech., Auct. Her. 4, 8, 11; ib. 16, 24; ib. 22, 32 sq.; Cic. Part. Or. 3, 10 al.