17-letter words containing o, u, r, l
- hippocampal gyrus — a convolution on the inner surface of the temporal lobe of the cerebrum, bordering the hippocampus.
- hold one's ground — the solid surface of the earth; firm or dry land: to fall to the ground.
- homeland security — national defence
- horticulturalists — Plural form of horticulturalist.
- household cavalry — (in Britain) cavalry units forming part of the ceremonial guard of the monarch.
- household rubbish — the unwanted things and waste material produced in the running of a household, such as used paper, empty tins and bottles, and waste food
- hungarian goulash — goulash (def 1).
- hurler's syndrome — a medical condition characterized by physical deformity and mental deficiency
- hydrofluoric acid — a colorless, fuming, corrosive liquid, HF, an aqueous solution of hydrogen fluoride, used chiefly for etching glass.
- hydrofluorocarbon — Any of a class of partly chlorinated and fluorinated hydrocarbons, used as an alternative to chlorofluorocarbons in foam production, refrigeration, and other processes.
- hydrogen fluoride — a colorless corrosive gas, HF, the anhydride of hydrofluoric acid, used chiefly as a catalyst and in the fluorination of hydrocarbons.
- hydrogen sulphide — Chemistry
- hypochlorous acid — a weak, unstable acid, HOCl, existing only in solution and in the form of its salts, used as a bleaching agent and disinfectant.
- ice-cream parlour — a place where people go to eat ice cream
- illegal procedure — a penalty assessed against the offensive team for a technical rules violation, as in assuming an illegal formation.
- illocutionary act — an act performed by a speaker by virtue of uttering certain words, as for example the acts of promising or of threatening
- immunofluorescent — Of, pertaining to, or using immunofluorescence.
- impossible figure — a picture of an object that at first sight looks three-dimensional but cannot be a two-dimensional projection of a real three-dimensional object, for example a picture of a staircase that re-enters itself while appearing to ascend continuously
- in double figures — An amount or number that is in single figures is between zero and nine. An amount or number that is in double figures is between ten and ninety-nine. You can also say, for example, that an amount or number is in three figures when it is between one hundred and nine hundred and ninety-nine.
- in double harness — in a harness for two animals pulling the same carriage, plow, etc.
- industrial action — job action.
- industrial school — a school for teaching one or more branches of industry; trade or vocational school.
- industrialisation — Alternative spelling of industrialization.
- industrialization — the large-scale introduction of manufacturing, advanced technical enterprises, and other productive economic activity into an area, society, country, etc.
- insupportableness — The state of being insupportable; insufferableness.
- insurmountability — incapable of being surmounted, passed over, or overcome; insuperable: an insurmountable obstacle.
- integral equation — an equation in which an integral involving a dependent variable appears.
- integral function — an entire function.
- intercolumniation — the space between two adjacent columns, usually the clear space between the lower parts of the shafts.
- irrational number — a number that cannot be exactly expressed as a ratio of two integers.
- irreproducibility — The quality of not being reproducible.
- it's your funeral — If someone says to you 'It's your funeral', they think your decision or your actions will have bad consequences for you, but they are unwilling to interfere.
- italian greyhound — one of an Italian breed of toy dogs resembling a greyhound.
- john of salisbury — c1115–80, English prelate and scholar.
- julian of norwich — ?1342–?1413, English mystic and anchoress: best known for the Revelations of Divine Love describing her visions
- juvenile offender — a child or young person who has been found guilty of some offence, act of vandalism, or antisocial behaviour before a juvenile court
- kastor and pollux — Castor and Pollux.
- keep your balance — If you keep your balance, for example when standing in a moving vehicle, you remain steady and do not fall over. If you lose your balance, you become unsteady and fall over.
- l'hospital's rule — the theorem that for the quotient of two functions satisfying certain conditions on a given closed interval, each having infinite limit or zero as limit at a given point, the limit of the quotient at the given point is equal to the limit of the quotient of the derivatives of each function.
- la perouse strait — a strait between S Sakhalin Island, Russia and N Hokkaido Island, Japan connecting the Sea of Okhotsk and the Sea of Japan. 25 miles (40 km) wide.
- label edge router — (networking) (LER) A device that sits at the edge of an MPLS domain, that uses routing information to assign labels to datagrams and then forwards them into the MPLS domain.
- ladder tournament — a tournament in which the entrants are listed by name and rank, advancement being by means of challenging and defeating an entrant ranked one or two places higher.
- lago de nicaragua — Spanish name of Lake Nicaragua.
- lambdoidal suture — the lambda-shaped seam or line of joining between the occipital and two parietal bones at the back part of the skull.
- lance of courtesy — a lance having a blunt head to prevent serious injury by a jouster to an opponent.
- langmuir isotherm — A Langmuir isotherm is a classical relationship between the concentrations of a solid and a fluid, used to describe a state of no change in the sorption process.
- last-in first-out — stack
- laurent's theorem — the theorem that a function that is analytic on an annulus can be represented by a Laurent series on the annulus.
- le morte d'arthur — a compilation and translation of French Arthurian romances by Sir Thomas Malory, printed by Caxton in 1485.
- least upper bound — an upper bound that is less than or equal to all the upper bounds of a particular set. 3 is the least upper bound of the set consisting of 1, 2, 3. Abbr.: lub.