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16-letter words containing um

  • drumhead service — a religious service attended by members of a military unit while in the field
  • dumont d'urville — Jules Sébastien César [zhyl sey-bas-tyan sey-zar] /ʒül seɪ basˈtyɛ̃ seɪˈzar/ (Show IPA), 1790–1842, French naval officer: explored South Pacific and Antarctic.
  • el camino bignum — (humour)   /el' k*-mee'noh big'nuhm/ The road mundanely called El Camino Real, a road through the San Francisco peninsula that originally extended all the way down to Mexico City and many portions of which are still intact. Navigation on the San Francisco peninsula is usually done relative to El Camino Real, which defines logical north and south even though it isn't really north-south many places. El Camino Real runs right past Stanford University. The Spanish word "real" (which has two syllables: /ray-al'/) means "royal"; El Camino Real is "the royal road". In the Fortran language, a "real" quantity is a number typically precise to seven significant digits, and a "double precision" quantity is a larger floating-point number, precise to perhaps fourteen significant digits (other languages have similar "real" types). When a hacker from MIT visited Stanford in 1976, he remarked what a long road El Camino Real was. Making a pun on "real", he started calling it "El Camino Double Precision" - but when the hacker was told that the road was hundreds of miles long, he renamed it "El Camino Bignum", and that name has stuck. (See bignum).
  • enriched uranium — uranium in which the proportion of the fissile isotope U-235 has been increased to make it more fissile
  • exhumation order — a legal instruction to exhume a body
  • feather geranium — a Eurasian weed, Chenopodium botrys, of the amaranth family, having clusters of inconspicuous flowers and unpleasant smelling, lobed leaves.
  • fibonacci number — a number in the Fibonacci sequence, each of which is the sum of the previous two
  • fuel consumption — use of a material to generate power
  • gallium arsenide — a crystalline and highly toxic semiconductor, GaAs, used in light-emitting diodes, lasers, and electronic devices.
  • general factotum — a person who does all sorts of jobs; general assistant
  • gingerbread plum — a tree, Neocarya macrophylla, of western Africa, bearing a large, edible, starchy fruit.
  • gossip columnist — a person who writes a gossip column
  • gum up the works — exertion or effort directed to produce or accomplish something; labor; toil.
  • heir presumptive — a person who is expected to be the heir but whose expectations may be canceled by the birth of a nearer heir.
  • hemopneumothorax — (medicine) pneumothorax and hemothorax occurring together.
  • hot buttered rum — a drink made with rum, hot water, and sugar, served with a lump of butter in a mug.
  • humanly possible — feasible, practical
  • humboldt current — a cold Pacific Ocean current flowing N along the coasts of Chile and Peru.
  • hummingbird moth — hawk moth.
  • hydrated alumina — a crystalline, water-insoluble powder, Al(OH) 3 or Al 2 O 3 ⋅3H 2 O, obtained chiefly from bauxite: used in the manufacture of glass, ceramics, and printing inks, in dyeing, and in medicine as an antacid and in the treatment of ulcers.
  • hydration number — the number of molecules of water with which an ion can combine in an aqueous solution of given concentration.
  • hydroxylammonium — (inorganic compound) The univalent NH3OH+ cation, derived from hydroxylamine.
  • hyperaccumulator — a plant that absorbs toxins, such as heavy metals, to a greater concentration than that in the soil in which it is growing
  • hyperreal number — any of the set of numbers formed by the addition of infinite numbers and infinitesimal numbers to the set of real numbers
  • imaginary number — Also called imaginary, pure imaginary number. a complex number having its real part equal to zero.
  • instrument panel — Also called instrument board. a panel on which are mounted an array of dials, lights, and gauges that monitor the performance of a machine or device, as an airplane.
  • instrumentalists — Plural form of instrumentalist.
  • ivyleaf geranium — a geranium plant, pelargonium peltatum, with trailing leaves and white, pink, red, or violet flowers
  • john von neumann — John, 1903–57, U.S. mathematician, born in Hungary.
  • jump up and down — bounce
  • lesbian cymatium — cyma reversa.
  • lithium chloride — a white, water-soluble, deliquescent, crystalline solid, LiCl, used chiefly in the manufacture of mineral water, especially lithia water, and as a flux in metallurgy.
  • lithium fluoride — a fine, white, slightly water-soluble powder, LiF, used chiefly in the manufacture of ceramics.
  • lithium stearate — a white, crystalline, slightly water-soluble powder, LiC 18 H 35 O 2 , used chiefly in cosmetics, in plastics, and as a lubricant in powder metallurgy.
  • lumberjack shirt — a thick checked shirt, as worn by lumberjacks
  • luminosity class — a classification of stars of a given spectral type according to their luminosity, breaking them down into dwarfs, giants, and supergiants.
  • lump sum payment — money: one-off payment
  • many-plumed moth — a moth of the species, Alucita hexadactyla
  • maximum-security — designed for or housing prisoners regarded as being very dangerous to society.
  • medium artillery — guns and howitzers of more than 105mm and less than 155mm caliber, sometimes including the 155mm howitzers. Compare heavy artillery (def 2), light artillery (def 2).
  • medium frequency — any frequency between 300 and 3000 kilohertz. Abbreviation: MF.
  • mesembryanthemum — any of various chiefly Old World plants of the genus Mesembryanthemum, having thick, fleshy leaves and often showy flowers.
  • methylthioninium — (organic chemistry, especially in combination) The heterocyclic cation 3,7-bis(dimethylamino)-phenothiazin-5-ium, that is the basis of methylene blue.
  • minimum-security — (of a prison) designed for prisoners regarded as being less dangerous; having fewer restrictions.
  • molecular volume — the volume occupied by one mole of a substance
  • monumental mason — a person who makes gravestones and suchlike
  • nash equilibrium — (in game theory) a stable state of a system involving the interaction of two or more players in which no player can gain by a unilateral change of strategy if the strategies of the other players remain unchanged
  • national costume — traditional dress
  • neptunium series — a radioactive series that starts with plutonium-241 and ends with bismuth-209. Neptunium-237 is the longest-lived member of the series. The series does not occur in nature
  • nodding trillium — a hardy plant, Trillium cernuum, of the lily family, of the eastern coast of North America, having wavy-petalled, white or pinkish flowers on short, recurved stalks hanging beneath the three whorled leaves.
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