18-letter words containing d, i, s, l
- sutton-in-ashfield — a market town in N central England, in W Nottinghamshire. Pop: 41 951 (2001)
- the bird has flown — the person in question has fled or escaped
- the dismal science — a name for economics coined by Thomas Carlyle
- the encyclopedists — the writers of the French Encyclopedia (1751-72) edited by Diderot and d'Alembert, which contained the advanced ideas of the period
- the first sea lord — the senior of the two serving naval officers who sits on the admiralty board of the Ministry of Defence
- the hotel industry — the branch of the services industry which provides hotels
- the middle passage — the journey across the Atlantic Ocean from the W coast of Africa to the Caribbean: the longest part of the journey of the slave ships sailing to the Caribbean or the Americas
- the-master-builder — a play (1892) by Ibsen.
- therese de lisieux — Saint (Marie Françoise Thérèse Martin"the Little Flower") 1873–97, French Carmelite nun.
- thiosulphuric acid — an unstable acid known only in solutions and in the form of its salts. Formula: H2S2O3
- thomas alva edison — Thomas Alva [al-vuh] /ˈæl və/ (Show IPA), 1847–1931, U.S. inventor, especially of electrical devices.
- thrills and spills — If you refer to thrills and spills, you are referring to an experience which is exciting and full of surprises.
- to close your mind — If you close your mind to something, you deliberately do not think about it or pay attention to it.
- to gird your loins — If you gird your loins, you prepare to do something difficult or dangerous.
- transit theodolite — a theodolite having a telescope that can be transited.
- tristan und isolde — a music drama (composed, 1857–59; première, 1865) by Richard Wagner.
- trobriand islander — a native or inhabitant of the Trobriand Islands of Papua New Guinea
- tufted loosestrife — a primulaceous plant Naumburgia thyrsiflora
- ultrasonic welding — the use of high-energy vibration of ultrasonic frequency to produce a weld between two components which are held in close contact
- universal debugger — (tool, parallel) (udb) KSR's interactive source level debugger for serial and parallel programs written in KSR, Fortran, KSR C and KSR1 assembly language. Udb is a source level debugger for testing and debugging serial and parallel programs; it is compatible with GDB and dbx. The user can direct udb either by typing commands or graphically through an X-based window interface; the latter provides simultaneous display of source code, I/O and instructions. For parallel programs, operations can be carried out per-thread.
- upper middle class — wealthy, highly-educated people
- video installation — an art installation incorporating video footage
- video surveillance — a system of monitoring activity in an area or building using a television system in which signals are transmitted from a television camera to the receivers by cables or telephone links forming a closed circuit
- wandering minstrel — travelling performer
- watson-crick model — a widely accepted model for the three-dimensional structure of DNA, featuring a double-helix configuration for the molecule's two hydrogen-bonded complementary polynucleotide strands.
- welland ship canal — a ship canal in S Canada, in Ontario, connecting Lakes Erie and Ontario: 8 locks. 25 miles (40 km) long.
- wesleyan methodist — a member of any of the churches founded on the evangelical principles of John Wesley.
- white-spotted hyla — a type of tree frog (H. leucophyllata) of tropical America
- wild passionflower — the maypop, Passiflora incarnata.
- wild sweet william — blue phlox.
- wildlife sanctuary — an area where wild animals and plants are protected
- winged everlasting — a bushy composite plant, Ammobium alatum, of Australia, having winged branches, javelin-shaped leaves, and white flowers.
- withdrawal symptom — effects of stopping a drug
- world championship — an international competition in a particular sport or activity for people all around the world
- wrongful dismissal — the act of making someone redundant for reasons which are illegal or unjust
- yeast nucleic acid — RNA.