Definition of Semi

Noun: semi se-mee or 'se,mI [N. Amer], se-mee [Brit]

One of the two competitions in the next to the last round of an elimination tournament
- semifinal, semi-final
A truck consisting of a tractor and trailer together
- trailer truck, tractor trailer, trucking rig, rig [N. Amer], articulated lorry [Brit]
[N. Amer] A trailer having wheels only in the rear; the front is supported by the towing vehicle
- semitrailer [N. Amer], trailer
[Brit] A house that is attached to another house on only one side
- semi-detached house

Prefix: semi- se-mee or 'se,mI [N. Amer], se-mee [Brit]

Partly, to some degree, partly similar
"semi-homemade"; "semi-intelligent thoughts";
- quasi-
Half