20-letter words containing h, e, t, r

methyl chloroformate — a colorless liquid, C 2 H 3 ClO 2 , used chiefly in organic synthesis.
methyl propyl ketone — a colorless, slightly water-soluble liquid, C 5 H 1 0 O, used chiefly as a solvent, especially in lacquers.
methyl styryl ketone — benzylidene acetone.
metric hundredweight — a unit of weight equivalent to 50 kilograms.
microelectrophoresis — any of several techniques for observing, by means of a microscope or an ultramicroscope, the electrophoresis of minute surface particles.
mischaracterizations — Plural form of mischaracterization.
moreton bay chestnut — an Australian leguminous tree, Castanospermum australe, having thin smooth bark and yellow or reddish flowers: used in furniture manufacture
mother of the chapel — (in British trade unions in the publishing and printing industries) a woman shop steward
mother-of-pearl moth — a pyralid moth, Pleuroptya ruralis, having a pale sheen, that is often seen around nettles, on which its green larvae feed
multiple inheritance — (programming) In object-oriented programming, the possibility that a class may have more than one direct superclass in the class hierarchy. The opposite is single inheritance.
multipurpose vehicle — a large car, similar to a van, designed to carry up to eight passengers
multistep hydroplane — a motorship having a flat bottom built as a series of planes inclined forward, the ship planing on each from stem to stern as its speed increases.
music of the spheres — a music, imperceptible to human ears, formerly supposed to be produced by the movements of the spheres or heavenly bodies.
near someone's heart — dear or important to someone
near-market research — scientific research that, while not linked to the development of a specific product, is likely to be commercially exploitable
netherlands antilles — a Netherlands overseas territory in the Caribbean Sea, N and NE of Venezuela; includes the islands of Aruba, Bonaire, Curaçao, Saba, and St. Eustatius, and the S part of St. Martin: considered an integral part of the Dutch realm. 366 sq. mi. (948 sq. km). Capital: Willemstad.
neuropsychiatrically — In terms of neuropsychiatry.
night storage heater — a heater or radiator that stores heat at night-time because electricity is cheaper
nondirective therapy — client-centered therapy.
north american plate — a major tectonic division of the earth's crust, comprising Greenland and the continent of North America and the suboceanic Labrador and North American Basins, and bounded on the east by the Mid-Atlantic Ridge, on the south by the Caribbean and South American Plates, and on the west by the San Andreas fault and Aleutian Trench.
north canadian river — a river in NE New Mexico, E Texas, and E Oklahoma, flowing SE to the Canadian River. 760 miles (1223 km) long.
north celestial pole — the point of intersection of the earth's extended axis and the northern half of the celestial sphere, lying about 1° from Polaris
north temperate zone — the part of the earth's surface between the tropic of Cancer and the Arctic Circle.
northern leaf blight — a disease of corn caused by the fungus Exsherohilum turcicum, characterized by elongate tan-gray elliptical spots with subsequent blighting and necrosis of leaves.
northern territories — a territory in N Australia. 523,620 sq. mi. (1,356,175 sq. km). Capital: Darwin.
northern white cedar — any of several chiefly coniferous trees valued for their wood, especially Chamaecyparis thyoides, of the eastern U.S., or Thuja occidentalis (northern white cedar) of northeastern North America.
not worth the candle — not worth the price or trouble entailed (esp in the phrase the game's not worth the candle)
occupation franchise — the right of a tenant to vote in national and local elections
occupational therapy — a form of therapy in which patients are encouraged to engage in vocational tasks or expressive activities, as art or dance, usually in a social setting.
off the beaten track — formed or shaped by blows; hammered: a dish of beaten brass.
off-the-job training — training which is carried out away from your normal place of work
officer of the guard — an officer, acting under the officer of the day, who is responsible for the instruction, discipline, and performance of duty of the guard in a post, camp, or station. Abbreviation: OG, O.G.
officer of the watch — the officer primarily responsible for the navigation of a ship, in the absence of the captain, during a certain watch.
olfactory anesthesia — absence or loss of the sense of smell.
on (or off) the air — that is (or is not) broadcasting or being broadcast
on o's best behavior — If someone is on their best behavior, they are trying very hard to behave well.
on the drawing board — in the planning stage
on the factory floor — in a factory; as a factory worker
on the starboard bow — within 45 degrees to the starboard of straight ahead
one's heart's desire — If you say that someone or something is your heart's desire, you mean that you want that person or thing very much.
one's spiritual home — Your spiritual home is the place where you feel that you belong, usually because your ideas or attitudes are the same as those of the people who live there.
ophthalmodynamometer — a device for determining the nearest point of ocular convergence.
order of the thistle — an ancient Scottish order of knighthood revived by James VII of Scotland in 1687. It consists of the sovereign, 16 knights brethren, and extra members created by statute. It is the equivalent of the Order of the Garter, and is usually conferred on Scots
orthognathic surgery — the surgical correction of deformities or malpositions of the jaw.
orthopaedic mattress — a specially firm mattress designed to help correct or ameliorate the discomfort of disorders of the spine and joints
ousterhout's fallacy — Ousterhout's dichotomy
overenthusiastically — With excessive enthusiasm.
overseer of the poor — a minor official of a parish attached to the workhouse or poorhouse
paint the town (red) — to go on a boisterous spree; carouse
paper chromatography — the separation of mixtures into their constituents by preferential adsorption by a solid, as a column of silica (column chromatography) or a strip of filter paper (paper chromatography) or by a gel.

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