1Either of two muscles covering the outer front part of the pelvis on each side and involved in movements of the thigh and hip.
- ‘The obturator may communicate with the femoral vein.’
- ‘The surgeon uses a special hip arthroscopy cannula with cannulated obturators to establish the portals.’
- ‘These branches supply the pectineus, the hip joint, and, by rejoining the obturator, the adductor muscles.’
- ‘In one case the iliolumbar was a branch of the obturator, itself a branch of the internal iliac.’
- ‘The lateral femoral circumflex may give rise to an obturator.’
- 1.1[as modifier]Relating to the obturator or to the obturator foramen.
- ‘The obturator nerve is located in the fascia directly under the pubic bone.’
- ‘Metastatic prostatic and transitional cell carcinomas were present in a single obturator lymph node.’
- ‘No tumor was detected in the right and left obturator lymph nodes.’
- ‘The obturator artery is very variable in origin and no embryological explanation has been found.’
- ‘The femoral, lateral cutaneous, and obturator nerves exit from the lumbar plexus.’
Early 18th century: from medieval Latin, literally obstructor from obturare stop up.