Home/Topics/Medical Devices & Equipment/breast implant Medical Devices & Equipment Reproductive, Pregnancy & Breast Health Bones, Joints & Muscles breast implant Listen Save Share Print Meaning of breast implant: A silicone gel-filled or saline-filled sac placed under the chest muscle to restore breast shape. Definition of breast implant A silicone gel-filled or saline-filled sac placed under the chest muscle to restore breast shape. Written and maintained by James Murray · Last updated July 21, 2026 Educational reference, not medical advice. Read the limitations. Keep exploringRelated termsMore in Medical Devices & Equipment → Biological & Chemical Substances estrogen After menopause the ovaries largely stop making it, and fat tissue converting adrenal hormones becomes the main remaining source. Read definition → General Medical Terms leiomyosarcoma Leiomyosarcoma is a rare malignant tumor arising from smooth muscle cells, most often found in the uterus, abdomen, or retroperitoneum. Read definition → Medications & Pharmacology alpha-adrenergic antagonist A drug class that occupies the receptors adrenaline uses to squeeze blood vessels and the muscle at the bladder outlet. Read definition → Medications & Pharmacology alpha-blocker Named for the receptor it occupies, this drug group loosens smooth muscle so vessels widen and urine flows more easily. Read definition →
Biological & Chemical Substances estrogen After menopause the ovaries largely stop making it, and fat tissue converting adrenal hormones becomes the main remaining source. Read definition →
General Medical Terms leiomyosarcoma Leiomyosarcoma is a rare malignant tumor arising from smooth muscle cells, most often found in the uterus, abdomen, or retroperitoneum. Read definition →
Medications & Pharmacology alpha-adrenergic antagonist A drug class that occupies the receptors adrenaline uses to squeeze blood vessels and the muscle at the bladder outlet. Read definition →
Medications & Pharmacology alpha-blocker Named for the receptor it occupies, this drug group loosens smooth muscle so vessels widen and urine flows more easily. Read definition →