noun re·ten·tor \rə̇ˈtentə(r)\

Definition of retentor



  1. :  a muscle that serves to retain a part in place especially when retracted

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Origin and Etymology of retentor

Latin, one that holds back, from retentus (past participle of retinēre to hold back, retain) + -or

Seen and Heard

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a rounded knoll or a ridge of ice

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