Definitions

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

  • noun (Zoöl.) A muscle which serves to retain an organ or part in place, esp. when retracted. See Illust. of phylactolemata.

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

  • noun A muscle which holds a body part in place, notably in extended or retracted position

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Latin, from retentare, from retinere 'to retain, hold back', from re- + tenere.

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