20-letter words containing a, h, e

mechanical advantage — the ratio of output force to the input force applied to a mechanism.
mechanical impedance — impedance (def 2).
mechanical-impedance — Electricity. the total opposition to alternating current by an electric circuit, equal to the square root of the sum of the squares of the resistance and reactance of the circuit and usually expressed in ohms. Symbol: Z.
membranous labyrinth — an intricate combination of paths or passages in which it is difficult to find one's way or to reach the exit. Synonyms: maze, network, web.
meta-dichlorobenzene — a colorless liquid, C 6 H 4 Cl 2 , soluble in alcohol and ether: used as a fumigant and insecticide.
methyl chloroformate — a colorless liquid, C 2 H 3 ClO 2 , used chiefly in organic synthesis.
methylbenzyl acetate — methylphenylcarbinyl acetate.
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.
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.
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
neighbourhood warden — a person employed by a local authority to patrol residential areas and deal with antisocial behaviour
nephroangiosclerosis — (pathology) sclerosis of the renal arterioles.
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.
neurophysiologically — In terms of, or with regard to, neurophysiology.
neuropsychiatrically — In terms of neuropsychiatry.
neuropsychologically — In terms of or by means of neuropsychology.
new england theology — Calvinism as modified and interpreted by the descendants of the Puritans in New England, especially Jonathan Edwards, becoming the dominant theology there from about 1730 to 1880.
new jerusalem church — a sect founded in 1787, based on Swedenborgianism
night storage heater — a heater or radiator that stores heat at night-time because electricity is cheaper
nineteenth amendment — an amendment to the U.S. Constitution, ratified in 1920, guaranteeing women the right to vote.
no lack of something — If you say there is no lack of something, you are emphasizing that there is a great deal of it.
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 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 have the stomach — If you have no stomach for something, you do not have the courage to do it.
not hold a candle to — to be inferior or contemptible in comparison with
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.
ode to a nightingale — a poem (1819) by Keats.
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.
old man of the woods — an edible, mild-tasting mushroom, Strobilomyces floccopus, occurring in coniferous woodlands of eastern North America.
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 shady side of — beyond (a given age); older than

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