plural of propwash deflection unit

(aviation) A generator in aircraft or other vehicles for providing electric power to various systems, such as lighting, especially when the main engines are not running.

plural of Heaviside unit function

A unit (in an artificial neural network) that employs a rectifier

(construction) A rectangular concrete block of a standard size used in construction.

plural of concrete masonry unit

plural of diesel multiple unit

(rail transport) A multiple-unit train of two or more coaches powered by diesel engines, usually installed underfloor.

(phonology) In autosegmental phonology, a segment, usually a syllable nucleus, which can be associated with a tone.

plural of tone-bearing unit