obturator

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Related to Obturator sign: rebound tenderness, appendicitis, obturator nerve, Psoas sign, Rovsing sign, Murphy's sign, Alvarado score

obturator

[′äb·tə‚rād·ər]
(anatomy)
Pertaining to that which closes or stops up, as an obturator membrane.
Either of two muscles, originating at the pubis and ischium, which rotate the femur laterally.
(medicine)
A solid wire or rod contained within a hollow needle or cannula.
(ordnance)
Assembly of steel spindle, mushroom head, obturator rings, and a gas-check or obturator pad of tough plastic material used as a seal to prevent the escape of propellant gases around the breechblock of guns using separate-loading ammunition, and therefore not having the obturation provided by a cartridge case.
A device incorporated in a projectile to make the tube of a weapon gastight, preventing escape of gas until the projectile has left the muzzle of the weapon.