characteristic

(noun) a prominent attribute or aspect of something. Synonyms: feature. Examples: "The map showed roads and other features." "Generosity is one of his best characteristics."

(noun) a distinguishing quality.

(noun) the integer part (positive or negative) of the representation of a logarithm; in the expression log 643 = 2.808 the characteristic is 2.

(noun) any measurable property of a device measured under closely specified conditions. Synonyms: device characteristic.

(adj) typical or distinctive. Synonyms: characteristic (vs. uncharacteristic). Examples: "Heard my friend's characteristic laugh." "Red and gold are the characteristic colors of autumn." "Stripes characteristic of the zebra."