Calostoma ravenelii
— Noun
– English
～ a gasteromycete with a leathery stalk and a fruiting body with a thin gelatinous spore case and elliptical spores
cathode-ray oscilloscope
— Noun
– English
～ electronic equipment that provides visual images of varying electrical quantities
cathode ray
— Noun
– English
～ a beam of electrons emitted by the cathode of an electrical discharge tube
cosmic ray
— Noun
– English
～ highly penetrating ionizing radiation of extraterrestrial origin; consisting chiefly of protons and alpha particles; collision with atmospheric particles results in rays and particles of many kinds
cow-nosed ray
— Noun
– English
～ large ray found along eastern coast of North America
cownose ray
— Noun
– English
～ large ray found along eastern coast of North America