18-letter words containing a, c, t, s, o
- creatine phosphate — phosphocreatine.
- crested dog's-tail — a common wiry perennial grass, Cynosurus cristatus, of meadows and pasture
- critical constants — the physical constants that express the properties of a substance in its critical state
- crookes radiometer — a type of radiometer consisting of an evacuated glass bulb containing a set of lightweight vanes, each blackened on one side. The vanes are mounted on a vertical axis and revolve when light, or other radiant energy, falls on them
- crude oil desalter — A crude oil desalter is equipment which removes inorganic salts from crude oil, using chemical or electrostatic separation.
- crystal microphone — a microphone that uses a piezoelectric crystal to convert sound energy into electrical energy
- crystal oscillator — a clear, transparent mineral or glass resembling ice.
- cultural diffusion — act of diffusing; state of being diffused.
- cultural sociology — the study of the origins and development of societal institutions, norms, and practices.
- cumbrian mountains — a mountain range in NW England, in Cumbria. Highest peak: Scafell Pike, 977 m (3206 ft)
- cumulative scoring — a method of scoring in which the score of a partnership is taken as the sum of their scores on all hands played.
- curvature of space — (in relativity) a property of space near massive bodies in which their gravitational field causes light to travel along curved paths.
- custodial sentence — a sentence given by a court that involves a term of imprisonment
- customer relations — Customer relations are the relationships that a business has with its customers and the way in which it treats them.
- customs and excise — Customs and Excise is a British government department which is responsible for collecting taxes on imported and exported goods. Compare Customs Service.
- cut-and-waste code — (humour, programming) Code that someone found online (e.g. in a blog) and copied and pasted into a product. The result is usually a lot of wasted time trying to track down obscure bugs from code that may have made sense in the original context but not in the new one. Also known as blog-driven development.
- cytoarchitectonics — Cytoarchitecture.
- debt consolidation — the process of taking out a new loan (often secured on one's property) in order to pay off a number of existing debts
- dechristianization — The act of dechristianizing; the systematic removal of Christianity or Christian elements.
- defense calculator — IBM 701
- diagnostic testing — Diagnostic testing is the testing of a vehicle, or one of its systems or parts, in order to identify why it is not working properly.
- dialytic telescope — a type of achromatic telescope with a second correcting lens
- diatomaceous earth — an unconsolidated form of diatomite
- digital switchover — the process of changing the method of transmitting television from analogue to digital format
- digital video disc — Digital Versatile Disc
- dihydrotachysterol — a white, crystalline, water-insoluble sterol, C 28 H 46 O, derived from ergosterol: used chiefly in the treatment of hypoparathyroidism.
- diphosphoglycerate — an ester of phosphoric acid and glyceric acid that occurs in the blood and that promotes the release of hemoglobin-bound oxygen.
- diplomatic service — diplomatic corps
- diplomatic shuttle — a series of diplomatic visits to other states made by an official, such as an ambassador or envoy
- directional signal — any of four signal lights on the front left, front right, rear left, and rear right of an automotive vehicle that, when actuated by the driver, flash in pairs on the side toward which a turn is to be made.
- disidentifications — Plural form of disidentification.
- dispatch documents — documents sent with a parcel, etc, detailing information such as contents, delivery address, etc
- display postscript — An extended form of PostScript permitting its interactive use with bitmap displays.
- distance education — education in which students receive instruction over the Internet, from a video, etc., instead of going to school.
- distribution class — form class
- domestic appliance — a machine used for household tasks, for example, a washing machine, refrigerator, etc.
- driver's education — high-school driving classes
- dysfunctionalities — Plural form of dysfunctionality.
- east india company — the company chartered by the English government in 1600 to carry on trade in the East Indies: dissolved in 1874.
- economic sanctions — any actions taken by one nation or group of nations to harm the economy of another nation or group, often to force a political change
- eleanor of castile — 1246–90, Spanish wife of Edward I of England. Eleanor Crosses were erected at each place at which her body rested between Nottingham, where she died, and London, where she is buried
- electoral district — an area that is considered as unit for the purposes of an election
- electoral register — An electoral register is an official list of all the people who have the right to vote in an election.
- electrocardiograms — Plural form of electrocardiogram.
- electrodesiccation — The drying of tissue, and the prevention of bleeding, using a high-frequency electric current.
- electron transport — the metabolic process in mitochondria or chloroplasts, in which electrons are transferred in stages from energy-rich compounds to molecular oxygen with liberation of energy
- electroretinograms — Plural form of electroretinogram.
- electrostatic lens — an electron lens consisting of a system of metal electrodes, the electrostatic field of which focuses the charged particles
- electrostatic unit — any unit that belongs to a system of electrical cgs units in which the electric constant is given the value of unity and is taken as a pure number
- enantioselectivity — (chemistry) The selectivity of a reaction towards one of a pair of enantiomers.