Optocoelia :: Optocoelia (n.) The cavity of one of the optic lobes of the brain in many animals.
Platycoelian :: Platycoelian (a.) Flat at the anterior and concave at the posterior end; -- said of the centra of the vertebrae of some extinct dinouaurs.
Procoelia :: Procoelia (n. pl.) A division of Crocodilia, including the true crocodiles and alligators, in which the dorsal vertebrae are concave in front..
Pseudocoelia :: Pseudocoelia (n.) The fifth ventricle in the mammalian brain. See Ventricle.
Roscoelite :: Roscoelite (n.) A green micaceous mineral occurring in minute scales. It is essentially a silicate of aluminia and potash containing vanadium.