21-letter words containing u, l, o
- homogeneous catalysis — Homogeneous catalysis is catalysis in which the catalyst takes part in the reaction that it increases.
- horizontal tabulation — (character) (tab, Control-I, HT, ASCII 9) A character which when displayed or printed causes the following character to be placed at the next "tabstop" - the column whose number is a multiple of the current tab width. Commonly (especially in Unix(?)) the tab width is eight, so, counting from the left margin (column zero), the tab stops are at columns 8, 16, 24, up to the width of the screen or page. A tab width of four or two is often preferred when indenting program source code to conserve indentation. Represented as "\t" in C, Unix, and derivatives.
- hubble classification — a method of classifying galaxies depending on whether they are elliptical, spiral, barred spiral, or irregular
- human papilloma virus — a species of virus that causes genital warts. Abbreviation: HPV.
- humanistic psychology — an approach to psychology that emphasizes emotions and the better understanding of the self in terms of observation of oneself and one's relations with others
- hydraulic accumulator — an apparatus in which gas, usually air, is used as a cushion or shock absorber in a hydraulic system.
- hypogammaglobulinemia — A type of immune disorder characterised by a reduction in all types of gamma globulins.
- illinois bundleflower — a warm-season perennial, Desmanthus illinoensis, having small brown legumes and fernlike leaves, native to North American prairies, glades, and pastures.
- 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 saecula saeculorum — for ever and ever.
- 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 misconduct — behaviour by an employee that is considered to be negligent or irregular to such an extent that disciplinary action may be taken, usually by agreement between management and the employee's representatives
- industrial psychology — the application of psychological principles and techniques to business and industrial problems, as in the selection of personnel or development of training programs.
- 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.
- infectious ectromelia — ectromelia (def 2).
- 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.
- input-output analysis — an analysis of production relationships between the industries of an economy involving a study of each industry's inputs and outputs, esp as used in social accounting
- 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.
- joseph bonaparte gulf — an inlet of the Timor Sea in N Australia. Width: 360 km (225 miles)
- jump all over someone — to spring clear of the ground or other support by a sudden muscular effort; leap: to jump into the air; to jump out a window.
- just leave well alone — to refrain from interfering with something that is satisfactory
- keep count/lose count — If you keep count of a number of things, you note or keep a record of how many have occurred. If you lose count of a number of things, you cannot remember how many have occurred.
- kekule von stradonitz — Friedrich August [free-drikh ou-goo st] /ˈfri drɪx ˈaʊ gʊst/ (Show IPA), 1829–96, German chemist.
- keto-enol tautomerism — tautomerism in which the tautomers are an enol and a keto form. The change occurs by transfer of a hydrogen atom within the molecule
- knights of st columba — an international, semi-secret fraternal and charitable order for Catholic laymen, which originated in New Haven, Connecticut in 1882 (the Knights of Columbus)
- lafcadio's adventures — French Les Caves du Vatican. a novel (1914) by André Gide.
- language-based editor — language-sensitive editor
- lap and shoulder belt — a car seat belt
- laugh up one's sleeve — the part of a garment that covers the arm, varying in form and length but commonly tubular.
- launch control center — any of a number of underground U.S. command facilities prepared to launch land-based missiles in event of war.
- league of arab states — Arab League.
- least common multiple — lowest common multiple.
- let well enough alone — separate, apart, or isolated from others: I want to be alone.
- line of communication — a means by which information may be transmitted from one person to another
- linguistic philosophy — an approach to philosophical problems used especially by certain British and American philosophers, inspired by G. E. Moore, and marked by the elucidation of difficult and controversial concepts by resolving them into their elements.
- live life to the full — If you say that someone lives life to the full, you mean that they try to gain a lot from life by being always busy and trying new activities.
- loch ness monster bug — (humour) (Or "Bugfoot") A bug which cannot be reproduced or has only been sighted by one person. Named after the mythical creature claimed to inhabit Loch Ness in Scotland.
- logic design language — (language) A language for computer design.
- look to one's laurels — any tree of the genus Laurus.
- lost in the underflow — (jargon) Too small to be worth considering; more specifically, small beyond the limits of accuracy or measurement. This is a reference to "floating point underflow". The Hacker's Jargon File claimed that it is also a pun on "undertow" (a kind of fast, cold current that sometimes runs just offshore and can be dangerous to swimmers). "Well, sure, photon pressure from the stadium lights alters the path of a thrown baseball, but that effect gets lost in the underflow". Compare epsilon, epsilon squared; see also overflow bit.