19-letter words containing t, o, r, u, l
- first person plural — a grammatical category of pronouns and verbs used by the speaker to refer to or talk about himself together with others
- flannelmouth sucker — a sucker, Catostomus latipinnis, of the Colorado River and its tributaries.
- floating restaurant — a boat or ship that has been converted for use as a restaurant
- fluoride toothpaste — toothpaste containing a small amount of fluoride as protection against tooth decay
- focal plane shutter — an opaque shield in a camera, lying in the focal plane of the lens, that, when tripped, admits light to expose the film or plate for a predetermined period, usually a fraction of a second
- focal-plane shutter — a camera shutter situated directly in front of the film.
- follow-up interview — a second interview following an initial interview
- for crying out loud — exasperation
- four colour theorem — four colour map theorem
- fractional currency — coins or paper money of a smaller denomination than the basic monetary unit.
- functional currency — Functional currency is the main currency used by a business.
- gastrocolic omentum — the peritoneal fold attached to the stomach and the colon and hanging over the small intestine.
- geneva nomenclature — an internationally accepted system for naming organic carbon compounds.
- glorious revolution — the events of 1688–89 in England that resulted in the ousting of James II and the establishment of William III and Mary II as joint monarchs
- gloucester old spot — a hardy rare breed of pig, white with a few black markings, that originally lived off windfalls in orchards in the Severn valley
- goldbach conjecture — an unproved theorem that every even integer greater than 2 can be written as the sum of two prime numbers.
- greenhouse whitefly — See under whitefly.
- gulf of carpentaria — a shallow inlet of the Arafura Sea, in N Australia between Arnhem Land and Cape York Peninsula
- handlebar moustache — a man's moustache having long, curved ends that resemble the handlebars of a bicycle.
- haul over the coals — a black or dark-brown combustible mineral substance consisting of carbonized vegetable matter, used as a fuel. Compare anthracite, bituminous coal, lignite.
- haute vulgarisation — vulgarization, or popularization, on a higher level, esp. as done by academics, scholars, etc.
- hexafluoroplatinate — (chemistry) The univalent anion PtF6- prepared by reacting platinum hexafluoride with certain metals or other elements.
- house of ill repute — a house of prostitution; whorehouse; brothel.
- hyperbolic function — a function of an angle expressed as a relationship between the distances from a point on a hyperbola to the origin and to the coordinate axes, as hyperbolic sine or hyperbolic cosine: often expressed as combinations of exponential functions.
- incomplete fracture — a fracture extending partly across the bone.
- instrumentalisation — (philosophy) The treatment of an idea as an instrument that functions as a guide to action.
- instrumentalization — Alternative spelling of instrumentalisation.
- inter-institutional — of, relating to, or established by institution.
- internal-combustion — of or relating to an internal-combustion engine.
- internuncial neuron — interneuron
- isidorus of miletus — flourished 6th century a.d, Byzantine engineer. He was one of the architects of Hagia Sophia; (originally an Orthodox cathedral and currently a museum in Istanbul, Turkey).
- isobutyl propionate — a colorless liquid, C 7 H 14 O 2 , used chiefly as a paint, varnish, and lacquer solvent.
- jacques montgolfier — Jacques Étienne [zhahk ey-tyen] /ʒɑk eɪˈtyɛn/ (Show IPA), 1745–99, and his brother Joseph Michel [zhaw-zef mee-shel] /ʒɔˈzɛf miˈʃɛl/ (Show IPA) 1740–1810, French aeronauts: inventors of the first practical balloon 1783.
- jerusalem artichoke — Also called girasol. a sunflower, Helianthus tuberosus, having edible, tuberous, underground stems or rootstocks.
- judicial separation — a decree of legal separation of spouses that does not dissolve the marriage bond.
- junior middleweight — a boxer weighing up to 154 pounds (69.3 kg), between welterweight and middleweight.
- junior welterweight — a boxer weighing up to 140 pounds (63 kg), between lightweight and welterweight.
- lagrangian function — kinetic potential.
- land of opportunity — Arkansas (used as a nickname).
- language laboratory — a special room or rooms with sound-recording and -reproducing equipment for use by students to practice speaking foreign languages, usually with an instructor monitoring the program.
- left-luggage locker — a coin-operated locker in which luggage can be left
- leisure occupations — activities which you enjoy and which you perform in your free time
- lieutenant governor — a state officer next in rank to a governor, who takes the governor's place in case of the latter's absence, disability, or death.
- life-support system — A life-support system is the same as a life-support machine.
- lift the curtain on — to begin
- lightning conductor — A lightning conductor is a long thin piece of metal on top of a building that attracts lightning and allows it to reach the ground safely.
- limit of resolution — the capacity of an optical system to resolve point objects as separate images.
- liouville's theorem — the theorem that every function of a complex variable, bounded and differentiable for all finite values of the variable, is a constant function.
- liquorice all-sorts — a brand of assorted sweets containing liquorice as well as coloured candy made of sugar, gelatine, and coconut
- logical unit number — (storage) (LUN) A 3-bit identifier used on a SCSI bus to distinguish between up to eight devices (logical units) with the same SCSI ID.