Exogyra :: Exogyra (n.) A genus of Cretaceous fossil shells allied to oysters.
Gyracanthus :: Gyracanthus (n.) A genus of fossil fishes, found in Devonian and carboniferous strata; -- so named from their round, sculptured spines..
Gyral :: Gyral (a.) Moving in a circular path or way; whirling; gyratory.
Gyral :: Gyral (a.) Pertaining to a gyrus, or convolution..
Gyration :: Gyration (n.) The act of turning or whirling, as around a fixed center; a circular or spiral motion; motion about an axis; rotation; revolution..
Gyration :: Gyration (n.) One of the whorls of a spiral univalve shell.
Gyratory :: Gyratory (a.) Moving in a circle, or spirally; revolving; whirling around..
Hydrargyrate :: Hydrargyrate (a.) Of or pertaining to mercury; containing, or impregnated with, mercury..
Levogyrate :: Levogyrate (a.) Turning or twisting the plane of polarization towards the left, as levulose, levotartaric acid, etc..