20-letter words containing c, o, a, l, h, u
- peroxysulphuric acid — a white hygroscopic crystalline unstable oxidizing acid. Formula: H2SO5
- perpendicular gothic — the style of Gothic architecture in England during the 14th and 15th centuries, characterized by tracery having vertical lines, a four-centred arch, and fan vaulting
- physical double star — two stars that appear as one if not viewed through a telescope with adequate magnification, such as two stars that are separated by a great distance but are nearly in line with each other and an observer (optical double star) or those that are relatively close together and comprise a single physical system (physical double star)
- physiologic jaundice — a transitory jaundice that affects some infants for the first few days after birth.
- polyanthus narcissus — a Eurasian amaryllidaceous plant, Narcissus tazetta, having clusters of small yellow or white fragrant flowers
- pseudo-psychological — of or relating to psychology.
- punch a (time) clock — to insert a timecard into a time clock when coming to or going from work
- pyroligneous alcohol — methyl alcohol.
- rachel louise carson — Christopher ("Kit") 1809–68, U.S. frontiersman and scout.
- saint john ambulance — an organization that provides first aid and first-aid training
- school without walls — a nontraditional educational program that uses community facilities as learning resources.
- semiautobiographical — pertaining to or being a fictionalized account of an author's own life.
- settle accounts with — to pay or receive a balance due
- shifting cultivation — a land-use system, esp in tropical Africa, in which a tract of land is cultivated until its fertility diminishes, when it is abandoned until this is restored naturally
- south american plate — a major tectonic division of the earth's crust, comprising the continent of South America and several ocean basins and bounded on the north by the Caribbean Plate, on the east by the Mid-Atlantic Ridge, on the west by a submarine trench that borders the western coast of the continent, and on the south by the Antarctic Plate.
- south atlantic ocean — the part of the Atlantic Ocean extending S from the Equator to the Antarctic continent.
- southern oscillation — a low-latitude fluctuation of atmospheric pressure closely linked with El Niño events, specifically the periods of El Niño warming and La Niña cooling.
- the luck of the draw — If you say that something is the luck of the draw, you mean that it is the result of chance and you cannot do anything about it.
- thermal conductivity — the amount of heat per unit time per unit area that can be conducted through a plate of unit thickness of a given material, the faces of the plate differing by one unit of temperature.
- thomas of erceldoune — Thomas of, Thomas of Erceldoune.
- to clear your throat — If you clear your throat, you cough once in order to make it easier to speak or to attract people's attention.
- trumpet call for sth — a signal for something
- warehouse facilities — places for storing goods
- what-you-may-call-it — an object or person whose name one does not know or cannot recall.
- white bush (scallop) — a variety of summer squash having a saucer-shaped white fruit, scalloped around the edges
- whole-life insurance — a type of insurance with a savings element that is guaranteed to pay out on death provided premiums have been paid as required by the policy
- wilson cloud chamber — cloud chamber.