Function: noun
Date: 1932
: a system of units based on the metric system and developed and refined by international convention especially for scientific work ― abbreviation SI
Function: noun
Date: 1932
: a system of units based on the metric system and developed and refined by international convention especially for scientific work ― abbreviation SI
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012