SI UNIT


Meaning of SI UNIT in English

SI unit /es ˈaɪ ˌjuːnət/ BrE AmE noun [countable] technical

a standard unit of measurement in an international system used especially by scientists. SI units include the metre, kilogram, second, AMPERE , and ↑ Kelvin .

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.