TOP

Definition of SI abbreviation from the Oxford Advanced Learner's Dictionary

SI

abbreviation
 
/ˌes ˈaɪ/
 
/ˌes ˈaɪ/
jump to other results
  1. International System
    (a system of measurements based on the metric system with standard basic units; from French ‘Système International’)
    • SI units
    Topics Maths and measurementc2
See SI in the Oxford Advanced American Dictionary
Check pronunciation: SI

Other results

All matches

Nearby words

perspective
noun
 
 
From the Word list
Oxford 3000
B2
Oxford Learner's Dictionaries Word of the Day