Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “SI unit”

See all translations

SI unit

noun [C] uk   /ˌesˈaɪˌjuː.nɪt/ specialized us  
a unit of measurement that is part of a system used for scientific and technical work all over the world: The SI unit of length is the metre.
Translations of “SI unit”
in Chinese (Traditional) 國際標準單位…
in Chinese (Simplified) 国际标准单位…
(Definition of SI unit from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of SI unit?
Add Cambridge dictionaries to your browser to your website

Word of the Day

baby

a very young child, especially one that has not yet begun to walk or talk

Word of the Day

The way we move (Verbs for walking and running)

by Kate Woodford,
March 25, 2015
​​​ This week we’re looking at interesting ways to describe the way that people move. Most of the verbs that we’ll be considering describe how fast or slow people move. Others describe the attitude or state of mind of the person walking or running. Some describe both. Starting with verbs for walking slowly,

Read More 

stackin’ p

March 30, 2015
idiom slang earning a lot of money ‘That’s a very generous present.”Yeah, well, she’s stackin’ p, innit?’

Read More