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.
A mob, mobile or monster is a computer-controlled non-player character (NPC) in a computer game such as an MMORPG or MUD. Depending on context, every and any such characters in a game may be considered to be a mob, or usage of the term may be limited to hostile NPCs and/or NPCs vulnerable to attack. Common usage refers to either a single character or a multitude of characters in a group as a mob. In most modern graphical games, mob may be used to specifically refer to generic monstrous NPCs that the player is expected to hunt and kill, excluding NPCs that engage in dialog or sell items or who cannot be attacked.