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Medical Definition of Gigli's operation
1. Severance of the pubic bone a few centimeters lateral to the symphysis, in order to increase the capacity of a contracted pelvis sufficiently to permit the passage of a living child. Synonym: Gigli's operation, pelviotomy, pelvitomy. Origin: L. Pubis, pubic bone, + G. Tome, incision (05 Mar 2000)