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

rayleigh distribution — (mathematics) A curve that yields a good approximation to the actual labour curves on software projects.
record of achievement — a statement of the personal and educational development of each pupil
right-angled triangle — a triangle one angle of which is a right angle
ring down the curtain — to lower the curtain at the end of a theatrical performance
ring-around-the-rosey — a children's game in which the players sing while going around in a circle and squat when the lyrics “all fall down” are sung.
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.
sail against the wind — to sail a course that slants slightly away from the true direction of the wind; sail closehauled
schema definition set — (SDS) Something in Portable Common Tool Environment.
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.
seventeenth amendment — an amendment to the U.S. Constitution, ratified in 1913, providing for the election of two U.S. senators from each state by popular vote and for a term of six years.
seventh day adventist — Seventh Day Adventist churches are churches that believe that Jesus Christ will return very soon, and that have Saturday as their holy day.
seventh-day adventist — See example at Seventh-Day.
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.
slatwall merchandiser — A slatwall merchandiser is a three-dimensional display unit with grooves cut into its surface into which metal hanging rails can be fixed at various heights.
snappy video snapshot — (hardware) (registered trademark) A frame grabber for the IBM PC designed and marketed by Play, Inc..
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.
sunday school teacher — someone who teaches at a Sunday school
swim against the tide — to resist prevailing opinion
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 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 san andreas fault — a geological fault in California
the stars and stripes — the national flag of the United States of America, consisting of 50 white stars representing the present states on a blue field and seven red and six white horizontal stripes representing the original states
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
thermal decomposition — Thermal decomposition is the process in which a chemical species breaks down when its temperature is increased.
third-party insurance — insurance that compensates for a loss to a party other than the insured for which the insured is liable.
three-quarter binding — a binding in which the material used for the back extends further over the covers than in half binding.
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.
vertically challenged — short in stature.
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.
whistling in the dark — If you say that someone is whistling in the dark, you mean that they are trying to remain brave and convince themselves that the situation is not as bad as it seems.
white-crowned sparrow — a North American sparrow, Zonotrichia leucophrys, having black and white stripes on the head.
white-knuckle paddler — an inexpert and timid canoeist.
with one's bare hands — If someone does something with their bare hands, they do it without using any weapons or tools.

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