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18-letter words containing i, l, t, m

  • 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.
  • interior monologue — Literature. a form of stream-of-consciousness writing that represents the inner thoughts of a character.
  • investment analyst — a specialist in forecasting the prices of stocks and shares
  • involuntary muscle — muscle: contracts involuntarily
  • isoamyl salicylate — a colorless, sometimes slightly yellow, synthetic oil, C 12 H 16 O 3 , having an orchidlike odor: used in perfumery.
  • isothermal process — a process that takes place without change in temperature.
  • italian somaliland — a former Italian colony and trust territory in E Africa: now part of the Democratic Somali Republic.
  • king-of-the-salmon — a ribbonfish, Trachypterus altivelis, of northern parts of the Pacific Ocean.
  • lactogenic hormone — prolactin.
  • lambda abstraction — A term in lambda-calculus denoting a function. A lambda abstraction begins with a lower-case lambda (represented as "\" in this document), followed by a variable name (the "bound variable"), a full stop and a lambda expression (the body). The body is taken to extend as far to the right as possible so, for example an expression, \ x . \ y . x+y is read as \ x . (\ y . x+y). A nested abstraction such as this is often abbreviated to: \ x y . x + y The lambda expression (\ v . E) denotes a function which takes an argument and returns the term E with all free occurrences of v replaced by the actual argument. Application is represented by juxtaposition so (\ x . x) 42 represents the identity function applied to the constant 42. A lambda abstraction in Lisp is written as the symbol lambda, a list of zero or more variable names and a list of zero or more terms, e.g. (lambda (x y) (plus x y)) Lambda expressions in Haskell are written as a backslash, "\", one or more patterns (e.g. variable names), "->" and an expression, e.g. \ x -> x.
  • law of mass action — the statement that the rate of a chemical reaction is proportional to the concentrations of the reacting substances.
  • lean manufacturing — efficiency in the production of goods
  • light displacement — the weight of a ship with all its permanent equipment, excluding the weight of cargo, persons, ballast, dunnage, and fuel, but usually including the weight of permanent ballast and water used to operate steam machinery.
  • light middleweight — an amateur boxer weighing 67–71 kg (148–157 pounds)
  • lighting cameraman — the person who designs and supervises the lighting of scenes to be filmed
  • limestone pavement — a horizontal surface of exposed limestone in which the joints have been enlarged, cutting the surface into roughly rectangular blocks
  • limit-state design — a design criterion specifying that with acceptable probabilities a structure will not reach a limit state in which it either is unfit for the use for which it was designed (unavailability limit state) or fails (ultimate limit state)
  • limited government — confined within limits; restricted or circumscribed: a limited space; limited resources.
  • limiting adjective — (in English and some other languages) one of a small group of adjectives that modify the nouns to which they are applied by restricting rather than describing or qualifying. This, some, and certain are limiting adjectives.
  • linear combination — a sum of products of each quantity times a constant: The expression aX + bY + cZ is a linear combination of X, Y, and Z, where a, b, and c are constants.
  • list comprehension — (functional programming)   An expression in a functional language denoting the results of some operation on (selected) elements of one or more lists. An example in Haskell: This returns all pairs of numbers (x,y) where x and y are elements of the list 1, 2, ..., 10, y <= x and their sum is less than 10. A list comprehension is simply "syntactic sugar" for a combination of applications of the functions, concat, map and filter. For instance the above example could be written: The term "list comprehension" appears in the references below. The earliest reference to the notation is in Rod Burstall and John Darlington's description of their language, NPL. David Turner subsequently adopted this notation in his languages SASL, KRC and Miranda, where he has called them "ZF expressions", set abstractions and list abstractions (in his 1985 FPCA paper [Miranda: A Non-Strict Functional Language with Polymorphic Types]).
  • literae humaniores — (at Oxford University) the faculty concerned with Greek and Latin literature, ancient history, and philosophy; classics
  • literal-mindedness — the quality or state of tending to take words in their literal sense
  • literary criticism — study and review of literature
  • little namaqualand — an arid coastal region in the S part of Namibia, extending into the Cape of Good Hope province of the Republic of South Africa, divided by the Orange River into two regions, one in Namibia (Great Namaqualand) the other in South Africa (Little Namaqualand) inhabited by the Nama.
  • local examinations — (in the UK) any of various examinations, such as the GCE, set by university boards and conducted in local centres, schools, etc
  • logarithmic spiral — log r = aθ
  • 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.
  • logical complement — (logic)   In Boolean algebra, the logical complement or negation of a Boolean value is the opposite value, given by the following truth table: A | -A --+--- T | F F | T -A is also written as A with a bar over it or with a small vertical line hanging from the right-hand end of the "-" (LaTeX \neg) or as A'. In the C programming language, it is !A and in digital circuit design, /A.
  • logical positivism — a philosophical movement that stresses the function of philosophy as a method of criticizing and analyzing science and that rejects all transcendental metaphysics, statements of fact being held to be meaningful only if they have verifiable consequences in experience and in statements of logic, mathematics, or philosophy itself, and with such statements of fact deriving their validity from the rules of language.
  • lone-parent family — a family in which there is only one parent
  • loosestrife family — the plant family Lythraceae, characterized by herbaceous plants, shrubs, and trees having usually opposite or whorled, simple leaves, clusters of flowers, and fruit in the form of a capsule, and including the crape myrtle, loosestrifes of the genus Lythrum, and the henna shrub.
  • loschmidt's number — the number of molecules in one cubic centimeter of an ideal gas at standard temperature and pressure, equal to 2.687 × 10 19.
  • luminous emittance — luminous flux emitted per unit area.
  • luminous intensity — the luminous flux in lumens emitted per unit solid angle by a light source, measured in candles.
  • magnesium silicate — a white powder, 3MgSiO 3 ⋅5H 2 O, with variable hydration, insoluble in water or alcohol, used as a rubber filler, a bleaching agent, an odor absorbent, and in the manufacture of paints and resins.
  • magnetic amplifier — an amplifier that applies the input signal to a primary winding and feeds an alternating current to a secondary winding where this current is modulated by the variations in the primary winding.
  • magnetic potential — a scalar quantity, analogous to the electric potential, defined at each point in a given magnetic field to be equal to the work done in bringing a unit north pole from infinity to the point.
  • magnetocrystalline — (physics) Describing the interaction between the magnetization and the crystal structure of a material.
  • magnetoelectricity — electricity developed by the action of magnets.
  • magnetorheological — (physics) describing a substance whose rheological properties are modified by a magnetic field.
  • major tranquilizer — antipsychotic (def 2).
  • malignant melanoma — skin cancer
  • malpighian tubules — one of a group of long, slender excretory tubules at the anterior end of the hindgut in insects and other terrestrial arthropods.
  • mandelbrot, benoit — Benoit Mandelbrot
  • margaret of valois — ("Queen Margot") 1533–1615, 1st wife of Henry IV of France: queen of Navarre; patron of science and literature (daughter of Henry II of France and Catherine de' Medici).
  • materials handling — the loading, unloading, and movement of goods, as within a factory or warehouse, especially by the aid of mechanical devices.
  • maternity hospital — birthing facility
  • mathematical error — a mistake in a mathematical calculation, etc
  • mathematical logic — symbolic logic.
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