Hello, you have come here looking for the meaning of the word 18-wheeler. In DICTIOUS you will not only get to know all the dictionary meanings for the word 18-wheeler, but we will also tell you about its etymology, its characteristics and you will know how to say 18-wheeler in singular and plural. Everything you need to know about the word 18-wheeler you have here. The definition of the word 18-wheeler will help you to be more precise and correct when speaking or writing your texts. Knowing the definition of18-wheeler, as well as those of other words, enriches your vocabulary and provides you with more and better linguistic resources.
Side view and underside view of a conventional 18-wheeler semi-trailer truck with an enclosed cargo space. The underside view shows the arrangement of the 18 wheels. Shown in blue in the underside view are the axles, drive shaft, and differentials. The legend for labeled parts of the truck is as follows: 1. tractor; tractor unit 2. semi-trailer (detachable) 3. engine compartment 4. cabin 5. sleeper (not present in all trucks) 6. air dam 7. fuel tanks 8. fifth wheelcoupling 9. enclosed cargo space 10. landing gear - legs for when semi-trailer is detached
From the total number of wheels: two front steering wheels on the tractor, plus dual wheels on each end of two axles (total of 8) at the rear of the tractor and supporting the front of the trailer, plus dual wheels on two axles at the rear of the trailer.
