Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A muscle that extends or straightens a limb or body part.

from The Century Dictionary.

  • noun In anatomy, a muscle which serves to extend or straighten any part of the body, as an arm or a finger: opposed to flexor. See cut under muscle.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Anat.) A muscle which serves to extend or straighten any part of the body, as an arm or a finger; -- opposed to flexor.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun anatomy A muscle whose contraction extends or straightens a limb or body part.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a skeletal muscle whose contraction extends or stretches a body part

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[New Latin extēnsor, from Latin extēnsus, past participle of extendere, to stretch out; see extend.]

Examples

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