SI DECIMAL PREFIXESSI DECIMAL PREFIXESAll SI units may have affixed to them standard prefixes which multiply the indicated quantity by a power of 10. Table 1-6 lists the standard prefixes and their symbols. A substantial part of the extensive range (1036) covered by these prefixes is in common use in electrical engineering (e.g., gigawatt, gigahertz, nanosecond, and picofarad). The practice of compounding a prefix (e.g., micromicrofarad) is deprecated (the correct term is picofarad).
H. Wayne Beaty; Donald G. Fink: Standard Handbook for Electrical Engineers, Sixteenth Edition. SI DECIMAL PREFIXES, Chapter (McGraw-Hill Professional, 2013), AccessEngineering