obturator

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Related to Obturator muscles: Nerve to obturator internus, Psoas muscle

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.
References in periodicals archive ?
In our study we describe the passage of the obturator nerve via the obturator canal, not the "obturator foramen," (2) since the obturator groove is converted to a canal by the superior margins of the obturator membrane and the obturator muscles.
A triangular region bordered by the superior pubic ramus, posterior margin of the pectineus muscle and anterior aspect of the external obturator muscle containing the obturator vessels and nerve was defined and later used clinically to perform obturator nerve block with ultrasound guidance.
Your goal is to work laterally, so that you can actually feel the tough parietal fascia that covers the obturator muscles.