plural of semi-trailer truck

A tractor-trailer or big rig, consisting of a semi-trailer and a semitruck pulling it.

(linguistics) A word or other linguistic form borrowed from a classical language into a later one, but partly reshaped based on later sound changes or by analogy with inherited words in the language. These words occur, for example, in the Romance and the Indo-Aryan languages.

(automotive) A multi-speed motor vehicle transmission where part of its operation is automated (typically the clutch actuation; partially automated) but the driver's input is still required to manually operate a gearshift and to change gear by hand/foot; i.e., not fully-automatic. Names for specific types of semi-automatic transmissions include clutchless manual, auto-manual, auto-clutch manual, and paddle-shift transmissions. These systems facilitate gear changes for the driver by operating the clutch system automatically, usually by means, or under control of an actuator or servo, sensors, a solenoid, and an integrated electronic control module, while still requiring the driver's input to manually shift gears.

plural of semi-learned borrowing

Alternative form of semimajor axis

plural of semi-boarding school

plural of semi-postal stamp

(architecture) Having the form of half an ellipse (divided along the major axis)

Partially empirical (and partially theoretical)