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retinaculum

US:USA pronunciation: respellingUSA pronunciation: respelling(ret′n ak′yə ləm)


WordReference Random House Unabridged Dictionary of American English © 2026
ret•i•nac•u•lum  (ret′n ak′yə ləm),USA pronunciation n., pl. -la (-lə).USA pronunciation 
  1. Anatomy, Zoologyany of various small structures that hook, clasp, or bind other structures to move them or hold them in place.
  2. Anatomy, Insects[Entomol.]a bristle on the butterfly forewing that clasps to the frenulum of the hindwing.
  • Neo-Latin; Latin retināculum tether, rope which holds fast or restrains, equivalent. to retin(ēre) to hold fast, retain + -ā- (from verb, verbal stems ending in -ā-; compare gubernaculum) + -culum -cule2
  • 1815–25

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