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18-letter words containing a, i, l, u, r

  • incommensurability — not commensurable; having no common basis, measure, or standard of comparison.
  • incremental backup — (operating system)   A kind of backup that copies all files which have changed since the date of the previous backup. The first backup of a file system should include all files - a "full backup". Call this level 0. The next backup could also be a full level 0 backup but it is usually much quicker to do a level 1 backup which will include only those files which have changed since the level 0 backup. Together the level 0 and level 1 backups will include the latest version of every file. Level 1 backups can be made until, say, the backup tape is nearly full, after which we can switch to level 2. Each level includes those files which have changed since the last backup at a lower level. The more levels you use, the longer it will take to restore the latest version of a file (or all files) if you don't know when it was last modified. Compare differential backup.
  • individual liberty — the liberty of an individual to exercise freely those rights generally accepted as being outside of governmental control.
  • indolebutyric acid — a white or yellowish, crystalline, water-insoluble powder, C 12 H 13 O 2 N, a plant hormone similar to indoleacetic acid and used for the same purposes.
  • inductive relation — A relation R between domains D and E is inductive if for all chains d1 .. dn in D and e1 .. en in E,
  • industrial diamond — a small often synthetic diamond, valueless as a gemstone, used in cutting tools, abrasives, etc
  • industrial disease — occupational disease (def 1).
  • industrial dispute — disagreement between workers and managers
  • industrial hygiene — the science that assesses, controls, and prevents occupational factors or sources of stress in the workplace that may significantly affect the health and well-being of employees or of the community in general
  • industrial vehicle — a vehicle designed for use in industry
  • informatory double — a double intended to inform one's partner that one has a strong hand and to urge a bid regardless of the strength of his or her hand.
  • inquisitor-general — the head of the Spanish court of Inquisition
  • instruction manual — how-to, usage guide
  • instrument landing — an aircraft landing accomplished by use of gauges on the instrument panel and ground-based radio equipment, with limited reference to outside visual signals.
  • insurable interest — a financial or other interest in the life or property covered by an insurance contract, without which the contract cannot be enforced
  • insurance salesman — male: sells insurance
  • intercartilaginous — (anatomy) Within cartilage.
  • interinstitutional — Between institutions.
  • international unit — an internationally agreed upon standard, as measured by bioassay, to which samples of a substance, as a drug or hormone, are compared to ascertain their relative potency.
  • inverse square law — one of several laws relating two quantities such that one quantity varies inversely as the square of the other, as the law that the illumination produced on a screen by a point source varies inversely as the square of the distance of the screen from the source.
  • involuntary muscle — muscle: contracts involuntarily
  • iron (ii) sulphate — an iron salt with a saline taste, usually obtained as greenish crystals of the heptahydrate, which are converted to the white monohydrate above 100°C: used in inks, tanning, water purification, and in the treatment of anaemia. Formula: FeSO4
  • irregular variable — a variable star whose brightness variation is irregular.
  • iverson's language — APL, which went unnamed for many years.
  • king's regulations — (in Britain and the Commonwealth when the sovereign is male) the code of conduct for members of the armed forces that deals with discipline, aspects of military law, etc
  • language universal — a trait or property of language that exists, or has the potential to exist, in all languages.
  • last in, first out — The expression last in, first out is used to say that the last person who started work in an organization should be the first person to leave it, if fewer people are needed.
  • last-in, first-out — an inventory plan based on the assumption that materials constituting manufacturing costs should be carried on the books at the market price of the last lot received. Abbreviation: LIFO. Compare first-in, first-out.
  • laugh like a drain — to laugh loudly and coarsely
  • launching ceremony — a ceremony that celebrates the launch of a ship for the first time into the water
  • laurentian plateau — (in Canada) the wide area of Precambrian rock extending west from the Labrador coast to the basin of the Mackenzie and north from the Great Lakes to Hudson Bay and the Arctic: rich in minerals
  • lean manufacturing — efficiency in the production of goods
  • leave in the lurch — a situation at the close of various games in which the loser scores nothing or is far behind the opponent.
  • lenticular process — a method for producing images with a three-dimensional effect by photographing on lenticulated film.
  • lieutenant general — a commissioned officer ranking next below a general and next above a major general.
  • like a house afire — a building in which people live; residence for human beings.
  • liqueur chocolates — chocolates containing liqueur
  • literae humaniores — (at Oxford University) the faculty concerned with Greek and Latin literature, ancient history, and philosophy; classics
  • logarithmus dualis — (mathematics)   (ld) Latin for logarithm base two. More commonly written as "log" with a subscript "2". Roughly the number of bits required to represent an integer.
  • louisiana purchase — a treaty signed with France in 1803 by which the U.S. purchased for $15,000,000 the land extending from the Mississippi River to the Rocky Mountains and from Canada to the Gulf of Mexico.
  • lunitidal interval — the period of time between the moon's transit and the next high lunar tide.
  • maclaurin's series — an infinite sum giving the value of a function f(x) in terms of the derivatives of the function evaluated at zero: f(x) = f(0) + (f′(0)x)/1! + (f″(0)x2)/2! + …
  • major tranquilizer — antipsychotic (def 2).
  • marsilius of padua — c1280–1343? Italian scholar and political theorist.
  • mercury delay line — (storage, history)   An archaic first-in first-out fixed time period data storage device using acoustic transducers to transmit data as waves in a trough or tube of mercury. EDSAC (Cambridge) and UNIVAC I used delay lines.
  • mergui archipelago — a group of over 200 islands in the Andaman Sea, off the Tenasserim coast of S Myanmar: mountainous and forested
  • microencapsulation — the process of enclosing chemical substances in microcapsules.
  • mineral supplement — a pill containing minerals that you take to improve your health
  • minor tranquilizer — antianxiety drug.
  • modular arithmetic — arithmetic in which numbers that are congruent modulo a given number are treated as the same. Compare congruence (def 2), modulo, modulus (def 2b).
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