ppl. a. Clearly indicated, marked or determined.
1704. Newton, Optics, II. I. (1721), 171. When the Rings … appeared only black and white, they were very distinct and well defined.
1835. J. Duncan, Beetles (Nat. Libr.), 154. A numerous and well-defined family, including nearly 200 known species.
1856. Kane, Arct. Expl., II. xxviii. 279. There was one well-defined lead which … lost itself to seaward.
1865. Lubbock, Prehist. Times, 146. Its well-defined geographical and historical range.
1899. Crockett, Kit Kennedy, xxxix. 278. If Kit had looked closely he would have seen that his frankness had brought a well-defined blush to her cheek.
