1. grey-blue - Adjective
2. grey-blue - Adjective Satellite
of blue tinged with grey
Source: WordNetThe summer was heavy with a kind of soft grey-blue weight in the sky-yet not in the sky, for it was as though there were no sky, but only air, an impalpable grey-blue substance, drugged with the weight of its own heat and hue. Mervyn Peake
Grey-blue represents supercritical liquid water.) Entropy is the above-mentioned unexpected and, to some, obscure integral that arises directly from the Carnot cycle. Source: Internet