Cancer arising in the mammary gland (usually in a woman or other female mammal, but occasionally in the rudimentary tissue of a male); an instance of this.
Origin
Mid 19th century; earliest use found in The Lancet.
Definition of breast cancer in US English:
breast cancer
noun
Cancer arising in the mammary gland (usually in a woman or other female mammal, but occasionally in the rudimentary tissue of a male); an instance of this.
Origin
Mid 19th century; earliest use found in The Lancet.