/ ˌkliːənˈtel; NAmE ˌklaɪənˈtel/ noun
[ sing.+ sing./pl. v . ] all the customers or clients of a shop / store, restaurant, organization, etc. :
an international clientele
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WORD ORIGIN
mid 16th cent. (in the sense clientship, patronage ): via French from Latin clientela clientship, from cliens , client- , variant of cluens heeding, from cluere hear or obey.