Dorsal: of, on, or relating to the upper side or back. Graviton: a hypothetical particle with zero charge and rest mass that is held to be the quantum of the gravitational field. Dorsal Graviton: a unisex worsted weight cowl with a very easy knit-purl texture. Part of the Technobabble collection; matches the Temporal Wingnut Hat and Lepton Flange Fingerless Gloves.