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principle of operation definition, principle of operation meaning | English dictionary. principle. n (Psychoanal) the idea that psychological processes and actions are governed by the gratification of needs. n the. the principle that energy and time or position and momentum, cannot both be accurately measured simultaneously.
Function(noun) the natural or assigned action of any power or faculty, as of the soul, or of the intellect; the exertion of an energy of some determinate kind. Function(noun) the course of action which peculiarly pertains to any public officer in church or state; the activity appropriate to any business or profession.