Webster’s Revised Unabridged Dictionary · 1913
Characteristic
Char′ac·ter·is′tic (kăr′ăk·tẽr·ĭs′tĭk), a. [Gr. χαρακτηριστικός: cf. F. charactéristique.] Pertaining to, or serving to constitute, the character; showing the character, or distinctive qualities or traits, of a person or thing; peculiar; distinctive.
Characteristic clearness of temper. Macaulay.
Char′ac·ter·is′tic, n. 1. A distinguishing trait, quality, or property; an element of character; that which characterized. Pope.
The characteristics of a true critic. Johnson.
2. (Math.) The integral part (whether positive or negative) of a logarithm.