Side effects vs Adverse effects. Side effects and adverse effects are both experienced by people in the healthcare field. Often the words are interchanged or used instead of the other, but wrongly so. There is ample difference in the meaning of both words.
Also found in: Wikipedia. system unit. An individual card, section of tape, or the like, which is manipulated during operation of the system; class 1 systems have one unit per document; class 2 systems have one unit per vocabulary term or concept. case.
The SI System of Measurement. A system of units is a class of units defined by composition from a base set of units, such that every instance of the class is standard unit for a physical dimension and every physical dimension has an associated unit. A measurement of any physical quantity must be expressed as a number followed by a unit.