23-letter words containing s, i, l, m
- transcendental idealism — the Kantian doctrine that reality consists not of appearances, but of some other order of being whose existence can be inferred from the nature of human reason
- treat someone like dirt — If you say that someone treats you like dirt, you are angry with them because you think that they treat you unfairly and with no respect.
- trellis code modulation — (TCM) A modulation technique with hardware error detection and correction.
- twin-lens reflex camera — a camera in which the image appears on a ground-glass viewer (focusing screen) after being reflected by a mirror or after passing through a prism or semitransparent glass; in one type (single-lens reflex camera) light passes through the same lens to both the ground glass and the film, while in another type (twin-lens reflex camera) light passes through one lens (viewing lens) to the ground glass and through a second lens (taking lens) to the film, the lenses being mechanically coupled for focusing.
- ulster defence regiment — a former reserve regiment of the British Army based in Northern Ireland
- 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.
- villiers de l'isle adam — August, Comte de (oɡyst, kɔ̃t də). 1838–89, French poet and dramatist; pioneer of the symbolist movement. His works include Contes cruels (1883) and the play Axel (1885)
- 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
- willow-leaved jessamine — a Chilean shrub, Cestrum parqui, of the nightshade family, having willowlike leaves and clusters of whitish or yellowish flowers that are very fragrant at night.