1650s, "fleshy excrescence," Medical Latin, from Greek sarkoma "fleshy substance" (Galen), from sarkoun "to produce flesh, grow fleshy," from sarx (genitive sarkos) "flesh" (see sarcasm) + -oma. Meaning "harmful tumor of the connective tissue" first recorded 1804.[sarcoma etymology, sarcoma origin, 英语词源]