The Collaborative International Dictionary of English v.0.48:
Greco-Roman \Gre"co-Ro"man\, a. Having characteristics that are partly Greek and partly Roman; as, Greco-Roman architecture. [1913 Webster]WordNet (r) 3.0 (2006):
Greco-Roman adj 1: of or pertaining to or characteristic of the ancient Greek and Roman cultures; "classical mythology"; "classical [syn: classical, classic, Greco-Roman, Graeco-Roman, Hellenic]