This is also known as thelaw of conservation of energy. The first law of thermodynamics is the application of the conservation of energy principle to heat and thermodynamic processes. The first law makes use of the key concepts of internal energy, heat, and system work. It is used extensively in the discussion of heat engines.
Definition of associate. 1 : closely connected (as in function or office) with another : sharing in responsibility or authority associate judges. 2 : having secondary or subordinate status associate membership in a society.
Full Definition of ASSOCIATION. 1. a: the act of associating b: the state of being associated: combination, relationship. 2. : an organization of persons having a common interest: society.3. : something linked in memory or imagination with a thing or person. 4.: the process of forming mental connections or bonds between sensations, ideas, or memories. an organization of persons having a common interest: society. 3. : something linked in memory or imagination with a thing or person. 4. : the process of forming mental connections or bonds between sensations, ideas, or memories.