18-letter words containing d, p, s, a, t, h
- 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
- thiosulphuric acid — an unstable acid known only in solutions and in the form of its salts. Formula: H2S2O3
- threatened species — a species likely, in the near future, to become an endangered species within all or much of its range.
- thrills and spills — If you refer to thrills and spills, you are referring to an experience which is exciting and full of surprises.
- to pick and choose — If you pick and choose, you carefully choose only things that you really want and reject the others.
- to sweep the board — If someone sweeps the board in a competition or election, they win nearly everything that it is possible to win.
- triphosphoric acid — the hypothetical acid H 5 P 3 O 10 , known chiefly by its salts.
- white-spotted hyla — a type of tree frog (H. leucophyllata) of tropical America
- withdrawal symptom — effects of stopping a drug