Definition of “extensor” - English Dictionary


“extensor” in English

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extensornoun [ C ]

uk /ɪkˈstent.sər/ us /ɪkˈsten.sɚ/ specialized

Examples from literature

  • It is more marked in the extensor than in the flexor groups of muscles. 
  • Some had their sleeves pushed up to the elbow to exhibit their compact flexors and extensors. 
  • The muscles which bend the limbs are called flexors while those which straighten them are known as extensors. 
  • Volar flexion is limited by the extensors of the phalanges. 
  • Wasting of the muscles, especially the extensors, in the vicinity of the joint is a constant accompaniment of arthritis. 

(Definition of “extensor” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“extensor” in American English

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extensornoun [ C ]


biology a muscle that allows you to make part of your body straight

(Definition of “extensor” from the Cambridge Academic Content Dictionary © Cambridge University Press)