21-letter words containing a, d, t, o, h, e

rutherford scattering — the scattering of an alpha particle through a large angle with respect to the original direction of motion of the particle, caused by an atom (Rutherford atom) with most of the mass and all of the positive electric charge concentrated at a center or nucleus.
s-k reduction machine — An abstract machine defined by Professor David Turner to evaluate combinator expressions represented as binary graphs. Named after the two basic combinators, S and K.
safe in the knowledge — If you do something safe in the knowledge that something else is the case, you do the first thing confidently because you are sure of the second thing.
schema definition set — (SDS) Something in Portable Common Tool Environment.
scorched earth policy — a military practice of devastating the property and agriculture of an area before abandoning it to an advancing enemy.
scorched-earth policy — a military practice of devastating the property and agriculture of an area before abandoning it to an advancing enemy.
second-hand endowment — A second-hand endowment is a traditional with-profits endowment policy that has been sold to a new owner part way through its term.
sheppard's correction — a method of correcting the bias in standard deviations and higher moments of distributions that arises from grouping values of the variable.
silicon tetrachloride — a colorless, fuming liquid, SiCl 4 , used chiefly for making smoke screens and various derivatives of silicon.
snappy video snapshot — (hardware) (registered trademark) A frame grabber for the IBM PC designed and marketed by Play, Inc..
sodium metabisulphite — an inorganic compound with the chemical formula Na2S2O5 that is used as a preservative, antioxidant and disinfectant
sovereign wealth fund — an investment fund created using the financial assets of a national government
spherical coordinates — Usually, spherical coordinates. any of three coordinates used to locate a point in space by the length of its radius vector and the angles this vector makes with two perpendicular polar planes.
spotted alfalfa aphid — a pale yellowish aphid, Therioaphis maculata, of the southern U.S., especially west of the Mississippi River, that is marked with black spots and has fine spines on its back: a pest mainly of alfalfa and some other legumes, as clover.
staffordshire terrier — former name of American Staffordshire terrier.
sunday school teacher — someone who teaches at a Sunday school
take sb at their word — If you take someone at their word, you believe what they say, when they did not really mean it or when they meant something slightly different.
the antipodes islands — a group of small uninhabited islands in the South Pacific, southeast of and belonging to New Zealand. Area: 62 sq km (24 sq miles)
the assessment method — a way of providing evidence that students' knowledge and learning match the aims of a course
the break of day/dawn — The break of day or the break of dawn is the time when it begins to grow light after the night.
the comrades marathon — an annual long-distance race run every year on the 16th of June from Durban to Pietermaritzburg, a distance of approximately 90 kilometres (56 miles)
the fall of the cards — the chance distribution of cards in a given deal
the household cavalry — a group of British soldiers on horseback who have the job of protecting the king or queen and their family
the moral high ground — If you say that someone has taken the moral high ground, you mean that they consider that their policies and actions are morally superior to the policies and actions of their rivals.
the order of the bath — an order of knighthood founded by George I in 1725. It consists of the sovereign, the Great Master, and three classes of member: Knight (or Dame) Grand Cross, Knight (or Dame) Commander, and Companion
the women's land army — a unit of women recruited to do agricultural work in the United Kingdom during World War I and World War II
the yellow brick road — the road to success or happiness (in the film the Wizard of Oz the yellow brick road leads to Oz)
theater of the absurd — theater in which standard or naturalistic conventions of plot, characterization, and thematic structure are ignored or distorted in order to convey the irrational or fictive nature of reality and the essential isolation of humanity in a meaningless world.
theatre of the absurd — drama in which normal conventions and dramatic structure are ignored or modified in order to present life as irrational or meaningless
thermal decomposition — Thermal decomposition is the process in which a chemical species breaks down when its temperature is increased.
third party procedure — impleader.
threshold wage policy — a policy whereby wages are increased in accordance with inflation
to be hard luck on sb — to be unfortunate or unlucky for someone
to fly off the handle — If you fly off the handle, you suddenly and completely lose your temper.
to hit the bookstands — (of a book) to be published
to let your hair down — If you let your hair down, you relax completely and enjoy yourself.
to live hand to mouth — If someone lives hand to mouth or lives from hand to mouth, they have hardly enough food or money to live on.
to play the race card — if someone plays the race card they bring up the issue of race in a discussion, perhaps for sympathy or to seek popularity by appealing to racist sentiment
to rear its ugly head — If something unpleasant rears its head or rears its ugly head, it becomes visible or noticeable.
to take the high road — to take the course of action which is safest and most familiar
trichloroacetaldehyde — chloral (def 1).
what the future holds — If you wonder what the future holds, you wonder what will happen in the future.
whip-and-tongue graft — a graft prepared by cutting both the scion and the stock in a sloping direction and inserting a tongue in the scion into a slit in the stock.
white-crowned sparrow — a North American sparrow, Zonotrichia leucophrys, having black and white stripes on the head.
wildlife photographer — someone that specializes in taking photographs of wild animals, especially in their natural habitats, and plants
with one's bare hands — If someone does something with their bare hands, they do it without using any weapons or tools.
yellow-throated vireo — an olive-green vireo, Vireo flavifrons, of eastern North America, having a bright yellow throat and breast.

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