14-letter words containing um
- pumped storage — a system for generating hydroelectric power for peak periods by pumping water from a lower to a higher reservoir during low-demand periods and then releasing it during peak periods.
- quadrumvirates — Plural form of quadrumvirate.
- quantum meruit — as much as he has earned: denoting a payment for goods or services in partial fulfilment of a contract or for those supplied when no price has been agreed
- quantum number — any integer or half of an odd integer that distinguishes one of the discrete states of a quantum-mechanical system.
- quantum optics — the branch of optics dealing with light as a stream of photons, each possessing a quantum of energy proportional to the frequency of light when it is considered as a wave motion.
- quantum system — a theoretical or actual system based on quantum physics, as a supercomputer.
- quantum theory — any theory predating quantum mechanics that encompassed Planck's radiation formula and a scheme for obtaining discrete energy states for atoms, as Bohr theory.
- radio spectrum — the portion of the electromagnetic spectrum that includes radio waves.
- radiostrontium — strontium 90.
- radium sulfate — a white, crystalline, water-insoluble, poisonous, radioactive solid, RaSO 4 , used chiefly in radiotherapy.
- radium therapy — treatment of disease by means of radium.
- raman-spectrum — the change in wavelength of light scattered while passing through a transparent medium, the collection of new wavelengths (Raman spectrum) being characteristic of the scattering medium and differing from the fluorescent spectrum in being much less intense and in being unrelated to an absorption band of the medium.
- random numbers — a number chosen by a random sampling, as from a table (random number table) or generated by a computer.
- re-enumeration — an act of enumerating.
- reaccumulation — act or state of accumulating; state of being accumulated.
- rheumatologist — a specialist in rheumatology, especially a physician who specializes in the treatment of rheumatic diseases, as arthritis, lupus erythematosus, and scleroderma.
- rhinosporidium — any fungus of the genus Rhinosporidium, members of which produce vascular polyps in the nasal passages.
- roman numerals — one of the numerals in the ancient Roman system of notation, still used for certain limited purposes, as in some pagination, dates on buildings, etc. The common basic symbols are I, (=1), V, (=5), X, (=10), L, (=50), C, (=100), D, (=500), and M, (=1000). The Roman numerals for one to nine are: I, II, III, IV, V, VI, VII, VIII, IX. A bar over a letter multiplies it by 1000; thus, X̅ equals 10,000. Integers are written according to these two rules: If a letter is immediately followed by one of equal or lesser value, the two values are added; thus, XX equals 20, XV equals 15, VI equals 6. If a letter is immediately followed by one of greater value, the first is subtracted from the second; thus, IV equals 4, XL equals 40, CM equals 900. Examples: XLVII(=47), CXVI(=116), MCXX(=1120), MCMXIV(=1914). Roman numerals may be written in lowercase letters, though they appear more commonly in capitals.
- rostral column — a memorial column having sculptures representing the rams of ancient ships.
- rumbledethumps — a Scottish dish of butter and mashed potatoes, sometimes mixed with cabbage or turnips
- rummelgumption — commonsense
- rummlegumption — common sense
- scandium oxide — a white infusible powder, Sc 2 O 3 , soluble in acids.
- scapulohumeral — of, relating to, or involving the scapula and humerus.
- sceuophylacium — a place where sacred vessels are kept
- schumann-heink — Ernestine, 1861–1936, U.S. contralto, born in Bohemia.
- science museum — a museum in London, originating from 1852 and given its present name and site in 1899: contains collections relating to the history of science, technology, and industry
- sense of humor — finding things funny
- serum globulin — the blood serum component consisting of proteins with a larger molecular weight than serum albumin
- serum sickness — a generalized allergic reaction to a foreign serum or drug, characterized by fever, skin rash, enlarged lymph nodes, and painful joints.
- showbiz column — a column about the entertainment industry
- single premium — a single payment that covers the entire cost of an insurance policy.
- slum clearance — the removal for rehousing, by the state, of those people who previously lived in slum areas, to prepare the area for demolition and rebuilding
- snow-in-summer — a mat-forming garden plant, Cerastium tomentosum, of the pink family, native to Italy, having white flowers and numerous narrow, white, woolly leaves in large patches, growing in sand.
- social dumping — the practice of allowing employers to lower wages and reduce employees' benefits in order to attract and retain employment and investment
- sodium bromide — a white, crystalline, hygroscopic, water-soluble solid, NaBr, used chiefly in photography as a developer, and in medicine as a sedative.
- sodium citrate — a white, crystalline or granular, water-soluble, odorless solid, Na 3 C 6 H 5 O 7 ⋅2H 2 O, having a cool, saline taste: used in photography, in soft drinks, and in medicine chiefly to prevent the coagulation of blood.
- sodium cyanide — a white, crystalline, deliquescent, water-soluble, poisonous powder, NaCN, prepared by heating sodium amide with charcoal: used chiefly in casehardening alloys, in the leaching and flotation of ore, and in electroplating.
- sodium lactate — a water-soluble, hygroscopic salt, C 3 H 5 NaO 3 , used in solution in medicine to treat metabolic acidosis, usually by injection.
- sodium nitrate — a crystalline, water-soluble compound, NaNO 3 , that occurs naturally as soda niter: used in fertilizers, explosives, and glass, and as a color fixative in processed meats.
- sodium nitrite — Chemistry. a yellowish or white crystalline compound, NaNO 2 , soluble in water, slightly soluble in alcohol and ether: used in the manufacture of dyes and as a color fixative.
- sodium sulfate — a white, crystalline, water-soluble solid, Na 2 SO 4 , used chiefly in the manufacture of dyes, soaps, detergents, glass, and ceramic glazes.
- sodium sulfide — a yellow or brick-red, crystalline, deliquescent, water-soluble solid, Na 2 S, used chiefly in the manufacture of dyes, soaps, and rubber, as a depilatory for leather, and in the flotation of powdered lead and copper ores.
- sodium sulfite — a white, crystalline, water-soluble solid, Na 2 SO 3 , used chiefly as a food preservative, as a bleaching agent, and as a developer in photography.
- son et lumiere — sound-and-light show.
- spark spectrum — a spectrum formed from the light produced by an electric spark, characteristic of the gas or vapor through which the spark passes.
- spectator pump — a woman's spectator shoe, closed at the front and back, usually having a medium or medium-high heel.
- speculum metal — any of several bronze alloys with a high tin content, often containing other materials, as silver, brass, lead, zinc, or arsenic, used for making mirrors and reflectors.
- spermatogonium — one of the undifferentiated germ cells giving rise to spermatocytes.
- sphaeristerium — an ancient Roman handball court.