18-letter words containing d, i, c, h
- the-dark-continent — Africa: so called, especially during the 19th century, because little was known about it.
- theodore gericault — (Jean Louis André) Théodore [zhahn lwee ahn-drey tey-aw-dawr] /ʒɑ̃ lwi ɑ̃ˈdreɪ teɪ ɔˈdɔr/ (Show IPA), 1791–1824, French painter.
- thioantimonic acid — a hypothetical acid, H3SbS4, known only in the form of its salts
- thioarsenious acid — any of a group of hypothetical acids, H3AsS3, HAsS2, and H4As2S5, known only in the forms of their salts
- thiosulphuric acid — an unstable acid known only in solutions and in the form of its salts. Formula: H2S2O3
- thirty-second note — a note having 1/32 of the time value of a whole note; demi-semiquaver.
- thirty-second rest — a rest equal in value to a thirty-second note.
- threatened species — a species likely, in the near future, to become an endangered species within all or much of its range.
- to come unstitched — to go wrong or awry
- to pick and choose — If you pick and choose, you carefully choose only things that you really want and reject the others.
- triphosphoric acid — the hypothetical acid H 5 P 3 O 10 , known chiefly by its salts.
- vectorcardiography — a method of determining the direction and magnitude of the electrical forces of the heart.
- watchdog committee — a committee responsible for monitoring standards of behaviour
- welland ship canal — a ship canal in S Canada, in Ontario, connecting Lakes Erie and Ontario: 8 locks. 25 miles (40 km) long.
- white-faced hornet — any large, stinging paper wasp of the family Vespidae, as Vespa crabro (giant hornet) introduced into the U.S. from Europe, or Vespula maculata (bald-faced hornet or white-faced hornet) of North America.
- widemouth blindcat — any of several catfishes, as Satan eurystomus (widemouth blindcat) of Texas, that inhabit underground streams and have undeveloped eyes and unpigmented skin.
- world championship — an international competition in a particular sport or activity for people all around the world