Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “semi-”

semi-

prefix
 
 
/semi-/
half or partly: Hugh is a semi-retired manufacturer of machine tools. semi-permanent semi-skilled
used to describe something that happens twice within a particular time: a semi-weekly appointment
(Definition of semi- from the Cambridge Business English Dictionary © Cambridge University Press)
What is the pronunciation of semi-?
Add Cambridge dictionaries to your browser to your website

Definitions of “semi-” in other dictionaries

Word of the Day

stampede

When animals or people stampede, they all move quickly in the same direction, often because they are frightened.

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More