18-letter words containing a, g, l, m, t, o
- lactogenic hormone — prolactin.
- lagrange's theorem — the theorem that the order of each subgroup of a finite group is a factor of the order of the group.
- 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.
- low-start mortgage — a mortgage in which interest only is repaid for a fixed period at the outset, to make it more affordable
- 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.
- malignant melanoma — skin cancer
- 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).
- mathematical logic — symbolic logic.
- mato grosso do sul — a state of W central Brazil: formed in 1979 from part of Mato Grosso state. Capital: Campo Grande. Pop: 2 140 624 (2002). Area: 350 548 sq km (135 318 sq miles)
- menthol cigarettes — cigarettes that are flavoured with menthol
- microgravitational — Of or pertaining to microgravitation.
- micropalaeontology — the branch of palaeontology concerned with the study of microscopic fossils
- moccasin telegraph — the transmission of rumour or secret information; the grapevine
- molecular genetics — a subdivision of genetics concerned with the structure and function of genes at the molecular level.
- montgomery village — a city in central Maryland.
- morning-after pill — a contraceptive pill containing only an estrogen and used by women within a few hours after sexual intercourse.
- move the goalposts — to change the aims of an activity to ensure the desired results
- national agreement — written formal agreements covering rates of pay and other terms and conditions of employment that are the result of collective bargaining at national level between one or more trade unions and employers in a sector of the economy
- national guardsman — guardsman (def 2).
- neuroophthalmology — the branch of ophthalmology that deals with the optic nerve and other nervous system structures involved in vision.
- no laughing matter — sth serious
- ophthalmologically — In an ophthalmological manner.
- overnight telegram — a type of domestic telegram sent at a reduced rate with a minimum charge for 10 words or less and accepted until midnight for delivery the following day.
- paleoclimatologist — the branch of paleogeography dealing with the study of paleoclimates.
- parallel computing — parallel processing
- parallel importing — the importing of certain goods, esp pharmaceutical drugs, by dealers who undersell local manufacturers
- passing modulation — a modulation of a temporary nature.
- pathologic anatomy — the branch of pathology dealing with the morphologic changes in tissues.
- phantasmagorically — having a fantastic or deceptive appearance, as something in a dream or created by the imagination.
- photochemical smog — air pollution containing ozone and other reactive chemical compounds formed by the action of sunlight on nitrogen oxides and hydrocarbons, especially those in automobile exhaust.
- phytohemagglutinin — a lectin, obtained from the red kidney bean, that binds to the membranes of T cells and stimulates metabolic activity, cell division, etc.
- plane trigonometry — the branch of trigonometry dealing with plane triangles.
- postmaster general — the executive head of the postal system of a country.
- primate of england — a title of the archbishop of Canterbury.
- psychogalvanometer — a type of galvanometer for detecting and measuring psychogalvanic currents.
- rotational molding — a method for molding hollow plastic objects by placing finely divided particles in a hollow mold that is rotated about two axes, exposing it to heat and then to cold.
- rule of engagement — a directive issued by a military authority controlling the use and degree of force, especially specifying circumstances and limitations for engaging in combat.
- segmental phonemes — phonemes consisting of sound segments; hence, the vowel, consonant, and semivowel sounds of a language
- significant symbol — a verbal or nonverbal gesture, as a word or smile, that has acquired a conventionalized meaning.
- societal marketing — marketing that takes into account society's long-term welfare
- spherical geometry — the branch of geometry that deals with figures on spherical surfaces.
- stinking chamomile — mayweed.
- stirling's formula — a relation that approximates the value of n factorial (n!), expressed as .
- strait of magellan — a strait between the mainland of S South America and Tierra del Fuego, linking the S Pacific with the S Atlantic. Length: 600 km (370 miles). Width: up to 32 km (20 miles)