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.
Consonant phoneme articulated as a stop before a fricative, such as /c/ or /j/.
The term affricate is used to describe a sound which is articulated in two ways. There is complete closure of the vocal tract, as in a stop, but the release has turbulent airflow like a fricative. Examples of affricates in English are as in chip and as in gyp.