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n. A complex speech sound consisting of a stop consonant followed by a fricative; for example, the initial sounds of child and joy. Also called affricative.

n. A sound produced using a combination of a plosive and a fricative. English sounds /t͡ʃ/ (catch) and /d͡ʒ/ (jury) are examples.

n. 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.

n. In phonology, an intimate combination of a stop with a spirant or fricative of the same position, as German pf (originally p) in pfennig, pfeffer, etc., or German z or iz (originally t) in zinn, tin, katze, cat, etc.

In phonology, to utter as an affricate.

n. a composite speech sound consisting of a stop and a fricative articulated at the same point (as `ch' in `chair' and `j' in `joy')

"Similarly loans such as "chamber", "champion", "chalice" don't have an initial affricate because of "mishearing" the French, but because of representing a loan before deaffrication or from a conservativ variety, or vice versa as in the last case."

affricates   

obstruent   

affrication