23-letter words containing m, u, d, l
- trellis code modulation — (TCM) A modulation technique with hardware error detection and correction.
- ulster defence regiment — a former reserve regiment of the British Army based in Northern Ireland
- uniform commercial code — a codification of commercial laws designed to provide uniformity among the states
- urea-formaldehyde resin — any of a group of resins formed by the interaction of urea and formaldehyde under conditions that include heat and pH control: used chiefly in the manufacture of buttons, baking enamels, and for making fabrics wrinkle-resistant.
- virtual loadable module — (networking) (VLM) Novell's term for software modules that can be dynamically loaded to extend the functionality of the "VLM" NetWare Requester for MS-DOS that became standard beginning with Novell NetWare 4.
- viscount melville sound — an arm of the Arctic Ocean between Victoria and Prince of Wales islands to the S and Melville and Bathurst islands to the N, in the Northwest Territories and Nunavut, Canada. 250 miles (400 km) long and 100 miles (160 km) wide.
- visual display terminal — video display terminal. Abbreviation: VDT.
- volumetric displacement — the volume of air per revolution that passes through a mechanical pump when the pressure at the intake and the exhaust is the same as that of the atmosphere
- wolfgang amadeus mozart — Wolfgang Amadeus [woo lf-gang am-uh-dey-uh s;; German vawlf-gahng ah-mah-dey-oo s] /ˈwʊlf gæŋ ˌæm əˈdeɪ əs;; German ˈvɔlf gɑŋ ˌɑ mɑˈdeɪ ʊs/ (Show IPA), 1756–91, Austrian composer.