18-letter words containing e, v, o, t, i
- radioactive dating — any method of determining the age of earth materials or objects of organic origin based on measurement of either short-lived radioactive elements or the amount of a long-lived radioactive element plus its decay product.
- radioactive series — a succession of elements initiated in the radioactive decay of a parent, as thorium or uranium, each of which decays into the next until a stable element, usually lead, is produced.
- raffinate recovery — Raffinate recovery is the use of a substance which is left after a process is complete and the desired substances have been removed.
- rapid eye movement — rapidly shifting, continuous movements of the eyes beneath closed lids during the stage of sleep characterized by dreaming.
- reactive component — the component in an alternating-current circuit that does not contribute power because it is 90° out of phase with the voltage or current.
- recovery operation — the process of locating and retrieving bodies, esp following an explosion or natural disaster
- recursive function — a function defined in terms of the repeated application of a number of simpler functions to their own values, by specifying a base clause and a recursion formula
- reduction division — the first division of meiosis in which the number of chromosomes is reduced to half the original number.
- relative major key — a major key that has the same key signature as a minor key, but a different tonic
- relative minor key — a minor key that has the same key signature as a major key, but a different tonic
- reverberation time — the time it takes for a sound made in a room to diminish by 60 decibels.
- revolution counter — a device for counting or recording the number of revolutions made by a rotating shaft, as of a motor or engine.
- revolutionary wars — American Revolution.
- ribbon development — housing or commercial buildings built along a stretch of road.
- russian revolution — Also called February Revolution. the uprising in Russia in March, 1917 (February Old Style), in which the Czarist government collapsed and a provisional government was established.
- seasonal variation — season-related variation
- second triumvirate — the coalition and joint rule of the Roman Empire by Antony, Lepidus, and Octavian, begun in 43 bc
- selective abortion — the aborting of particular embryos for medical or social reasons
- sesto san giovanni — a city in Lombardy, N Italy: a suburb of Milan.
- set priority level — (SPL) The way traditional Unix kernels implement mutual exclusion by running code at high interrupt priority levels and thus blocking lower level interrupts.
- silvery spleenwort — a fern, Diplazium pycnocarpon, of eastern North America, having fronds from 20 to 30 inches (50.8 to 76.2 cm) long on yellowish-green stalks.
- social environment — the environment developed by humans as contrasted with the natural environment; society as a whole, especially in its relation to the individual.
- solvent extraction — Solvent extraction is the separation of a particular substance from a mixture by dissolving that substance in a solvent that will dissolve it, but which will not dissolve any other substance in the mixture.
- specific viscosity — a measure of the resistance to flow of a fluid, expressed as the ratio of the absolute viscosity of the fluid to that of a reference fluid (usually water in the case of liquids)
- split-level cooker — a cooker that is designed with a separate oven and hob so that they can be fitted wherever is most convenient in the kitchen
- standard deviation — a measure of dispersion in a frequency distribution, equal to the square root of the mean of the squares of the deviations from the arithmetic mean of the distribution.
- stick-to-itiveness — persistence, tenacity
- strong derived set — the set of all strong accumulation points of a given set.
- supportive therapy — any treatment, such as the intravenous administration of certain fluids, designed to reinforce or sustain the physiological well-being of a patient
- symbolist movement — a movement beginning in French and Belgian poetry towards the end of the 19th century with the verse of Mallarmé, Valéry, Verlaine, Rimbaud, Maeterlinck, and others, and seeking to express states of mind rather than objective reality by making use of the power of words and images to suggest as well as denote
- synthetic division — a simplified procedure for dividing a polynomial by a linear polynomial.
- take a dim view of — not bright; obscure from lack of light or emitted light: a dim room; a dim flashlight.
- talk of the devil! — used when an absent person who has been the subject of conversation appears
- teacher evaluation — the process of vetting teachers to maintain teaching standards
- teleobjective lens — telephoto lens.
- telephone receiver — a device, as in a telephone, that converts changes in an electric current into sound.
- television cabinet — a cabinet on which a television set is placed or in which it is encased
- television company — a company that broadcasts programmes by television
- television licence — a certificate giving official permission to own a television set
- television station — station (def 8).
- tender loving care — considerate and kindly care, as of someone who is ill, upset, etc
- the movie industry — the industry that makes entertainment films or movies
- the operative word — If you describe a word as the operative word, you want to draw attention to it because you think it is important or exactly true in a particular situation.
- thomas alva edison — Thomas Alva [al-vuh] /ˈæl və/ (Show IPA), 1847–1931, U.S. inventor, especially of electrical devices.
- to play favourites — to display favouritism
- to save one's life — If you say that someone cannot do something to save their life, you are emphasizing that they do it very badly.
- 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 take a dim view — If you take a dim view or a poor view of someone or something, you disapprove of them or have a low opinion of them.
- transverse section — cross section (def 1).
- turbine ventilator — a ventilator, usually mounted on the roof of a building, deck of a ship, etc., having at its head a globular, vaned rotor that is rotated by the wind, conveying air through a duct to and from a chamber below.