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natremia The presence of sodium ions in the blood. Derived terms . dysnatremia; hypernatremia; hyponatremia; natremic; Translations
University of Pennsyl vania 1. Definition. A digitally operated electronic apparatus which uses a programmable memory for. the internal storage of instructions for implementing specific functions such as. logic, sequencing, timing, counting, and arithmetic to control, through digital or. analog input/output modules, various types of machines or processes.