Affricate \Af"fri*cate\, n. [L. affricatus, p. p. of affricare to rub against; af- = ad- + fricare to rub.]

(Phon.) A combination of a stop, or explosive, with an immediately following fricative or spirant of corresponding organic position, as pf in german Pfeffer, pepper, z (= ts) in German Zeit, time.

Source: Webster's Revised Unabridged Dictionary (1913)