21-letter words containing n, e, t, l
- give someone a tinkle — to call someone on the telephone
- give someone the slip — to move, flow, pass, or go smoothly or easily; glide; slide: Water slips off a smooth surface.
- glacier national park — a national park in NW Montana: glaciers; lakes; forest reserve. 1534 sq. mi. (3970 sq. km).
- glen of imaal terrier — a strongly-built medium-sized variety of terrier with a medium-length coat and short forelegs
- goldbach's conjecture — the conjecture that every even number greater than two is the sum of two prime numbers
- grammatical inference — Deducing a grammar from given examples. Also known as "inductive inference" and recently as "computational learning".
- greater sunda islands — a group of islands in the W Malay Archipelago, forming the larger part of the Sunda Islands: consists of Borneo, Sumatra, Java, and Sulawesi
- guaranteed scheduling — (algorithm) A scheduling algorithm used in multitasking operating systems that guarantees fairness by monitoring the amount of CPU time spent by each user and allocating resources accordingly.
- heliocentric parallax — the apparent displacement of an observed object due to a change in the position of the observer.
- help a person on with — to assist a person in the putting on of (clothes)
- henry steele commager — Henry Steele, 1902–98, U.S. historian, author, and teacher.
- home improvement loan — a government loan for house improvements such as insulation, adding a bathroom, or urgent repairs
- homogeneous catalysis — Homogeneous catalysis is catalysis in which the catalyst takes part in the reaction that it increases.
- homolosine projection — an equal-area projection of the world, distorting ocean areas in order to minimize the distortion of the continents.
- horizontal stabilizer — the horizontal surface, usually fixed, of an aircraft empennage, to which the elevator is hinged.
- horns and halo effect — a tendency to allow one's judgement of another person, esp in a job interview, to be unduly influenced by an unfavourable (horns) or favourable (halo) first impression based on appearances
- hubble classification — a method of classifying galaxies depending on whether they are elliptical, spiral, barred spiral, or irregular
- hyperlipoproteinaemia — the condition of having an abnormally high level of lipoproteins in the blood
- hysterosalpingography — (medicine) X-ray examination of the uterus and oviducts following injection of a radiopaque substance.
- identical proposition — a proposition in which the subject and predicate have the same meaning, as, “That which is mortal is not immortal.”.
- immaculate conception — the dogma of the unique privilege by which the Virgin Mary was conceived in her mother's womb without the stain of original sin through the anticipated merits of Jesus Christ. Compare virgin birth (def 1).
- immunoelectrophoresis — a technique for the separation and identification of mixtures of proteins, consisting of electrophoresis followed by immunodiffusion.
- immunoelectrophoretic — a technique for the separation and identification of mixtures of proteins, consisting of electrophoresis followed by immunodiffusion.
- immunohistochemically — By means of or in regard to immunohistochemistry.
- in (or out of) place — in (or out of) the customary, proper, or assigned place
- in one's shirtsleeves — not wearing a jacket
- in-complete dominance — the appearance in a heterozygote of a trait that is intermediate between either of the trait's homozygous phenotypes.
- inclusive disjunction — See under disjunction (def 2a).
- indigenous australian — another name for Aboriginal and Torres Strait Islander
- indo-australian plate — a major tectonic division of the earth's crust, comprising India and the Australian continent and adjacent suboceanic basins (the Tasman, South Australian, Mid-Indian, Cocos, and Australian basins); separated from the Eurasian Plate by the Java Trench, from the Pacific Plate by the Tonga-Kermadec Trench, and from the African Plate by a series of mid-ocean ridges (the Carlsberg, Mid-Indian, and Southeast Indian ridges).
- induction loop system — a system enabling partially deaf people to hear dialogue and sound in theatres, cinemas, etc, consisting of a loop of wire placed round the perimeter of a designated area. This emits an electromagnetic signal which is picked up by a hearing aid
- industrial revolution — (sometimes initial capital letters) the totality of the changes in economic and social organization that began about 1760 in England and later in other countries, characterized chiefly by the replacement of hand tools with power-driven machines, as the power loom and the steam engine, and by the concentration of industry in large establishments.
- infant mortality rate — number of babies dying
- infant welfare clinic — a medical facility that specializes in the health and well-being of young babies
- infectious ectromelia — ectromelia (def 2).
- infertility treatment — treatment aimed at helping a couple conceive
- inflationary universe — a version of the big bang theory in which the universe underwent very rapid growth during the first fraction of a second before it settled down to its current rate of expansion.
- information appliance — (hardware) (IA) A consumer device that performs only a few targeted tasks and is controlled by a simple touch-screen interface or push buttons on the device's enclosure.
- information retrieval — the systematic storage and recovery of data, as from a file, card catalog, or the memory bank of a computer. Abbreviation: IR.
- instrumental learning — a method of training in which the reinforcement is made contingent on the occurrence of the response
- insulin shock therapy — a former treatment for mental illness, especially schizophrenia, employing insulin-induced hypoglycemia as a method for producing convulsive seizures.
- intellectual property — Law. property that results from original creative thought, as patents, copyright material, and trademarks.
- intelligence quotient — an intelligence test score that is obtained by dividing mental age, which reflects the age-graded level of performance as derived from population norms, by chronological age and multiplying by 100: a score of 100 thus indicates a performance at exactly the normal level for that age group. Abbreviation: IQ.
- intentional community — a community designed and planned around a social ideal or collective values and interests, often involving shared resources and responsibilities.
- internal iliac artery — iliac artery (def 3).
- internal jugular vein — Anatomy. a jugular vein.
- international brigade — a military force that fought on the Republican side in the Spanish Civil War, consisting of volunteers (predominantly socialists and communists) from many countries
- interpersonal therapy — a type of psychotherapy that focuses on conflicts in one's personal relationships.
- intersubstitutability — a person or thing acting or serving in place of another.
- intracoastal waterway — a mostly inland water route, partly natural and partly artificial, extending 1550 miles (2500 km) along the Atlantic coast from Boston to Florida Bay (Atlantic Intracoastal Waterway) and 1116 miles (1800 km) along the Gulf coast from Carrabelle, Fla., to Brownsville, Tex. (Gulf Intracoastal Waterway) constructed to protect small craft from the hazards of the open sea.