It's a "semi" trailer because it doesn't have its own engine, front axles and wheels, transmission, and so on. Thus, "semi-truck" is a nickname for a truck that carries a semi-trailer.
SEMI meaning: 1 : 54114; 2 : 3 / ˈsɛˌmaɪ/ US : a short, heavy truck that has a long trailer attached to the back and that is used to move goods : semitrailer
autoevolution: This 1985 Ford LTL 9000 Semi Truck and Trailer Is Actually a Go-Kart
Built by F.W. Leisure Industries of Tempe, Arizona, this Ford LTL 900 semi-truck might look like the real thing if framed correctly, but is actually just a go-kart. It comes with an open trailer, and ...
This 1985 Ford LTL 9000 Semi Truck and Trailer Is Actually a Go-Kart
MSN: Who Invented The Semi-Truck & When Was The First Model Sold?
The history of the semi-truck dates back to Cleveland, Ohio, in the late 1890s — back before even the Model T had hit the road. Alexander Winton, founder of the Winton Motor Carriage Company, was one ...
SEMI is a global industry association that connects and supports companies in the microelectronics design and manufacturing value chain.
The meaning of SEMI is semifinal —often used in plural. How to use semi in a sentence.
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.
semi (plural semis) (UK, Ireland, Australia, Canada, informal) A semi-detached house. quotations 2008, Elliott Placks, quoted in Helen Isbister, Morris Bryant, Property, Career FAQs, Australia, page 40, I′m selling two side-by-side semis that are currently under construction, a waterfront apartment and a house in Rose Bay.