From Longman Dictionary of Contemporary Englishaffricateaf‧fri‧cate /ˈæfrɪkət/ noun [countable] technical SLa plosive sound such as /t/ or /d/ that is immediately followed by a fricative sound made in the same part of the mouth, such as /s/ or /ʒ/. The word ‘church’, for example, contains the affricate /tʃ/.Origin affricate (1800-1900) Latin past participle of affricare “to rub against”, from ad- “to” + fricare “to rub”