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

3 days ago · A fatal multi-vehicle crash involving a semi-truck forced the hourslong closure of the westbound 10 Freeway in Ontario Thursday morning.

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.

2 days ago · One person was killed early Thursday after hitting a steel bridge support beam that was knocked loose in a collision with a big rig and fell onto the 10 Freeway in Ontario. The …

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”. …

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 © …

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Mar 26, 2025 · The Semi 101 series is a beginner’s guide to understanding microchips and the semiconductor industry – from components to processes and everything in between. This …

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