21-letter words containing o, p, e, n, t

south pacific current — an ocean current that flows E in the South Pacific Ocean parallel to the Antarctic Circumpolar Current.
spark ignition engine — A spark ignition engine is an engine running on the Otto cycle.
special correspondent — a journalist who covers stories firsthand from a war zone
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.
spin angular momentum — to make (yarn) by drawing out, twisting, and winding fibers: Pioneer women spun yarn on spinning wheels.
spirits of turpentine — oil of turpentine.
st. christopher-nevis — St. Kitts-Nevis.
stabilization-process — the act or process of stabilizing or the state of being stabilized.
steady-state response — A steady-state response is the behavior of a circuit after a long time when steady conditions have been reached after an external excitation.
step-down transformer — a device that transfers an alternating current from one circuit to one or more other circuits with a decrease of voltage
stock list department — (in an American stock exchange) the department dealing with monitoring compliance with its listing requirements and rules
stop loss reinsurance — Stop loss reinsurance is a form of reinsurance under which the reinsurer pays the cedant's losses in any year over a particular percentage of the earned premium.
student participation — the extent to which students participate or involve themselves in a class, course, etc
subjective complement — subject complement.
subliminal perception — perception of or reaction to a stimulus that occurs without awareness or consciousness
sun protection factor — SPF.
supergranulation cell — one of a number of large convection cells in the photosphere and chromosphere of the sun, each having a diameter of 10,000–20,000 miles (16,000–32,000 km) and lasting longer than a day.
surface of projection — the surface upon which an image or a set of points is projected.
sweet spirit of nitre — ethyl nitrite spirit.
sympathetic vibration — a vibration induced by resonance.
symphonie fantastique — a programmatic symphony (1830–31) in five movements by Hector Berlioz.
take someone prisoner — to capture and hold someone as a prisoner, esp as a prisoner of war
tape operating system — (operating system) (TOS) An IBM operating system for System 360, used in the early days around 1965 to support the IBM 360 model 30 et al. TOS was a predecessor to IBM's Disk Operating System. TOS died out really early as disks such as the 2311 and 2314 became common with the IBM 360 whereas thet had been a real luxury on the IBM 7090.
temperature inversion — inversion (def 12).
tenure track position — a position or office that carries with it the opportunity to eventually obtain tenure or the right to permanent employment
the acting profession — actors considered as a group
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 central provinces — the Canadian provinces of Ontario and Quebec
the end of one's rope — the end of one's endurance, resources, etc.
the joker in the pack — If you describe someone or something as the joker in the pack, you mean that they are different from the other people or things in their group, and can be unpredictable.
the oldest profession — prostitution
the origin of species — (On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life) a treatise (1859) by Charles Darwin setting forth his theory of evolution.
the press association — the national news agency for the United Kingdom and Ireland
the probation service — a criminal justice service that is mainly responsible for dealing with offenders by placing them under the supervision of a probation officer
the shipping forecast — a radio broadcast made by the BBC of weather reports and forecasts for the seas around the British Isles
the slough of despond — a state of extreme despondency, depression or degradation
theater of operations — the part of the theater of war, including a combat zone and a communications zone, that is engaged in military operations and their support.
therapeutic community — a group-based form of therapy for mental disorders, sometimes residential
thermal decomposition — Thermal decomposition is the process in which a chemical species breaks down when its temperature is increased.
thermal power station — a power station in which heat is converted into electricity
thermophosphorescence — thermoluminescence.
ticker-tape reception — (mainly in New York) the showering of the motorcade of a distinguished politician, visiting head of state, etc, with ticker tape as a sign of welcome
to be mixed up in sth — if you are mixed up in something, usually something bad, you are involved in it
to blow sth wide open — to expose something
to fall into the trap — If someone falls into the trap of doing something, they think or behave in a way which is not wise or sensible.
to play second fiddle — If you play second fiddle to someone, your position is less important than theirs in something that you are doing together.
to pull someone's leg — If you are pulling someone's leg, you are teasing them by telling them something shocking or worrying as a joke.
to put one over on sb — If someone puts one over on you, they make you do or believe something by telling you things that are not true.
to put the wind up sb — If something or someone puts the wind up you, they frighten or worry you.
topgallant forecastle — a partial weather deck on top of a forecastle superstructure; forecastle deck.

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