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Definition of Breast augmentation
Medically reviewed by Min Clinic Staff | Updated: January 2026
Breast augmentation: Artificial enlargement of the breasts. Breast augmentation may be done by insertion of a silicone bag (prosthesis) under the breast (submammary) or under the breast and chest muscle (subpectoral), after which the bag is filled with saline solution. This prosthesis expands the breast area to give the appearance of a fuller breast (increased cup size).