The Collaborative International Dictionary
Sarco-
Sarco- \Sar"co-\ A combining form from Gr. sa`rx, sa`rkos, flesh; as, sarcophagous, flesh-eating; sarcology.
Douglas Harper's Etymology Dictionary
sarco-
before vowels sarc-, word-forming element meaning "flesh, fleshy, of the flesh," from Latinized form of Greek sark-, comb. form of sarx "flesh" (see sarcasm).
Wiktionary
sarco-
pre. flesh