What is 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 called?

affricate — 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. (Webster's 1913.)

Sources