A thick-walled spore that is the resting stage of some bacteria.
clypeastridea
clypeastroida
dactylopterus
hydrocephalus
hydrocephalus
noun
(medicine) A usually congenital condition in which an abnormal accumulation of fluid in the cerebral ventricles causes enlargement of the skull and compression of the brain, destroying much of the neural tissue
perissodactyl
perissodactyl
noun
Any ungulate mammal with an odd number of toes and belonging to the Perissodactyla, including the horses, zebra, and rhinoceros.
