18-letter words containing t, a, l, p

spectropolarimeter — an instrument for determining the extent to which plane-polarized light of various wavelengths is rotated by certain solutions, consisting of a combination of a spectroscope and a polarimeter.
spectropolariscope — an instrument combining the functions of a spectroscope with those of a polariscope.
spherical geometry — the branch of geometry that deals with figures on spherical surfaces.
spherical triangle — a triangle formed by arcs of great circles of a sphere.
spin stabilization — a technique by which a bullet, rocket, etc, is made to spin around its longitudinal axis to assist it in maintaining a steady flight path
spinal anaesthesia — anaesthesia of the lower half of the body produced by injecting an anaesthetic beneath the arachnoid membrane surrounding the spinal cord
spotted flycatcher — a European woodland songbird, Muscicapa striata, with a greyish-brown streaked plumage: family Muscicapidae (Old World flycatchers)
st. james's palace — a palace in London, England: the royal residence from the time of Henry VIII until the accession of Victoria.
status epilepticus — a condition in which repeated epileptic seizures occur without the patient gaining consciousness between them. If untreated for a prolonged period it can lead to long-term disability or death
stepping-off place — jumping-off place (def 2).
subatomic particle — physics:
super giant slalom — a slalom race in which the course is longer and has more widely spaced gates than in a giant slalom.
super royal octavo — a book size, 63⁄4 by 101⁄4 inches
super royal quarto — a book size, 101⁄4 by 131⁄2 inches
supraorbital ridge — browridge.
talent competition — a contest in which people compete by showcasing their talents, for example in singing, dancing, acrobatics, etc
talk between ships — TBS (def 1).
telephone exchange — a telecommunications facility to which subscribers' telephones connect, that switches calls among subscribers or to other exchanges for further routing.
television company — a company that broadcasts programmes by television
temporal summation — the act or process of summing.
terrestrial planet — inner planet.
the family compact — the ruling oligarchy in Upper Canada in the early 19th century
the general public — the people in a society; people in general
the lords temporal — (in Britain) peers other than bishops in their capacity as members of the House of Lords
the middle passage — the journey across the Atlantic Ocean from the W coast of Africa to the Caribbean: the longest part of the journey of the slave ships sailing to the Caribbean or the Americas
the palmetto state — a nickname for South Carolina
the practicalities — the real facts or details of a situation, as opposed to its theoretical aspects
the-cocktail-party — a play in verse (1950) by T. S. Eliot.
thiosulphuric acid — an unstable acid known only in solutions and in the form of its salts. Formula: H2S2O3
thrills and spills — If you refer to thrills and spills, you are referring to an experience which is exciting and full of surprises.
to all appearances — apparently
to fall into place — If things fall into place, events happen naturally to produce a situation you want.
to hold your peace — If you hold or keep your peace, you do not speak, even though there is something you want or ought to say.
to learn the ropes — If you are learning the ropes, you are learning how a particular task or job is done.
to lick into shape — If you lick, knock, or whip someone or something into shape, you use whatever methods are necessary to change or improve them so that they are in the condition that you want them to be in.
to play favourites — to display favouritism
to plough a furrow — If you say that someone ploughs a particular furrow or ploughs their own furrow, you mean that their activities or interests are different or isolated from those of other people.
to pull a fast one — If you say that someone has pulled a fast one on you, you mean that they have cheated or tricked you.
to scrape a living — If you say that someone scrapes a living or scratches a living, you mean that they manage to earn enough to live on, but it is very difficult. In American English, you say they scrape out a living or scratch out a living.
to spill the beans — If you spill the beans, you tell someone something that people have been trying to keep secret.
to take the plunge — If you take the plunge, you decide to do something that you consider difficult or risky.
traditional option — an option that once purchased cannot be resold
traditional policy — a life assurance policy in which the policyholder's premiums are paid into a general fund and his or her investment benefits are calculated according to actuarial formulae
traditional weapon — a weapon having ceremonial tribal significance, such as an assegai or knobkerrie
transylvanian alps — a mountain range in S Romania; a SW extension of the Carpathian Mountains. Highest peak: Mount Negoiu, 2548 m (8360 ft)
truck center plate — one of a pair of plates that fit together and support the body of a car on a truck, while allowing the truck to rotate with respect to the body. One plate (body center plate) is attached to the underside of the car body and the other (truck center plate) is part of the car truck.
unit magnetic pole — the unit of magnetic pole strength equal to the strength of a magnetic pole that repels a similar pole with a force of one dyne, the two poles being placed in a vacuum and separated by a distance of one centimeter.
unpledged delegate — (in the US) a delegate at a national party convention who is free to vote for any candidate
up to the eyeballs — You use up to the eyeballs to emphasize that someone is in an undesirable state to a very great degree.
upper klamath lake — See under Klamath Lakes.

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