And why are tractor-trailers called semis? The answer is simply because “semi-truck,” or just “semi,” has become a catch-all term to describe the vehicles.

Semis are so named because they fall between standard trucks and trailers in terms of size. What sets them apart from other trucks is their ability to detach the trailer, making them more versatile for …

Aug 2, 2025 · Learn what is a semi truck, why trucks are called semis, and what an 18 wheelers is. Complete guide covering semi truck design, history, and importance in transportation.

Jul 29, 2013 · Ever wondered where all the trucker lingo comes from? Check out our break down of why big rigs are called semis here on the uShip blog!

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

Sep 25, 2024 · As we mentioned prior, semi-trucks are mainly defined by having a detachable trailer that is used to support their loads. A regular truck, otherwise known as a box or straight truck, contains...

Feb 19, 2025 · Understanding the distinction helps clarify why trucks are called semis and why they are so prevalent in the trucking industry. Many myths surround semi-trucks, largely due to their name …

Aug 27, 2019 · A semi-trailer truck more commonly semi truck or simply “semi” is the combination of a tractor unit and one or more semi-trailers to carry freight. A semi-trailer attaches to the tractor with a …

Mar 13, 2023 · Semi trucks are known by many other monikers, from tractor-trailer and 18-wheeler to the more informal big rig. Some people even drop the truck and just call them semis.

Oct 11, 2023 · Also known as tractor-trailers, 18-wheelers, big rigs, or semis, these vehicles are composed of a truck and trailer team with a towing vehicle (the tractor) and generally a box trailer or …