Noun. 1. refrigerant-any substance used to provide cooling (as in a refrigerator). substance-a particular kind or species of matter with uniform properties; shigella is one of the most toxic substances known to man.cryogen-a liquid that boils at below -160 C and is used as a refrigerant.. A substance, such as air, ammonia, water, or carbon dioxide, used to provide cooling either as the working substance of a refrigerator or by direct absorption of heat. 2. Medicine An agent used to reduce fever.
usually offensive: a person affected with extreme mental retardation. 2. : a foolish or stupid person. â idiot adjective. See idiot defined for English-language learners.
Moroni, Son of Mormon. Moroni 2 is the last prophet and author of the last book in the Book of Mormon. His life spanned the latter part of the fourth century and the early fifth century. He led ten thousand troops in the last battle against the Lamanites, serving under his father Mormon, who was commander in chief.