Semi- is a numerical prefix meaning "half". The prefix alone is often used as an abbreviation when the rest of the word (the thing which half of is being described) is clear from context.

The meaning of SEMI is semifinal —often used in plural. How to use semi in a sentence.

SEMI Is the global industry association representing the electronics manufacturing supply chain, connecting over 2,000 member companies and 1.3 million professionals worldwide.

SEMI represents the electronics manufacturing and design supply chain, connecting over 2,600 member companies and 1.3 million professionals worldwide.

SEMI- definition: a combining form borrowed from Latin, meaning “half,” freely prefixed to English words of any origin, now sometimes with the senses “partially,” “incompletely,” “somewhat”. See examples …

Dec 29, 2025 · Adverb [edit] semi (not comparable) (informal) Somewhat; to some extent. quotations

A semi is a large truck that is made in two separate sections, a tractor and a trailer, which are joined together by metal bars.

Dec 2, 2025 · Discover Company Info on SEMI WORLD AUTOMOTIVE LLC in Spring Hill, KS, such as Contacts, Addresses, Reviews, and Registered Agent.

Semi- is usually used to mean partially or half when talking about technical or scientific subjects, as well as math. When coining a word meaning half of something, English speakers will most often use the …

semi- a combining form meaning “half” (semiannual), “partially,” “somewhat” (semiautomatic; semidetached; semiformal).