19-letter words containing a, c, o, s

molecular biologist — a specialist in the study of biological phenomena at the molecular level
moses-in-the-cradle — a plant, Rhoeo spathacea, native to the West Indies and Central America, having leaves with purple undersides and white flowers enclosed in a boat-shaped envelope formed by two bracts.
motivation research — the application of the knowledge and techniques of the social sciences, especially psychology and sociology, to understanding consumer attitudes and behavior: used as a guide in advertising and marketing.
mouse-ear chickweed — any of various similar and related plants of the genus Cerastium
mucopolysaccharides — Plural form of mucopolysaccharide.
multiplication sign — Arithmetic. the symbol (⋅), (×), or (∗) between two mathematical expressions, denoting multiplication of the second expression by the first. In certain algebraic notations the sign is suppressed and multiplication is indicated by immediate juxtaposition or contiguity, as in ab.
munchausen syndrome — a factitious disorder in which otherwise healthy individuals seek to hospitalize themselves with feigned or self-induced pathology in order to receive surgical or other medical treatment.
music to one's ears — something that is very pleasant to hear
nagling coalescence — (networking, algorithm) An algorithm for improving TCP/IP network performance by combining small packets ("tinygrams") into larger ones, thus reducing the per-packet overhead. The server transmits the packet either when it has reached a preset size or when it receives an acknowledgment of the previous packet.
narcotics anonymous — an organization that helps drug users recover from drug addiction
nasty piece of work — malicious person
national assistance — (in Britain) formerly a weekly allowance paid to certain people by the state to bring their incomes up to minimum levels established by law
national characters — (character) Characters with accents and other diacritical marks that are used in certain written languages (that are based on the Roman alphabet) but not in others, particularly not in English. A standard list is ISO Latin 1.
national serviceman — a soldier undertaking compulsory military service
natural catastrophe — A natural catastrophe is an unexpected event, caused by nature, such as an earthquake or flood, in which there is a lot of suffering, damage, or death.
necessary condition — prerequisite
neuropsychodynamics — The theoretical synthesis of neuroscience and psychodynamics.
newcastle upon tyne — 1st Duke of, Pelham-Holles, Thomas.
newtonian mechanics — the branch of mechanics that is based on Newton's laws of motion and that is applicable to systems that are so large that Planck's constant can be regarded as negligibly small (distinguished from quantum mechanics).
newtonian telescope — a reflecting telescope in which a mirror or reflecting prism is mounted on the axis near the eyepiece so that the image may be viewed from outside the telescope tube at right angles to the axis.
nicolaus copernicus — Nicolaus [nik-uh-ley-uh s] /ˌnɪk əˈleɪ əs/ (Show IPA), (Mikolaj Kopernik) 1473–1543, Polish astronomer who promulgated the now accepted theory that the earth and the other planets move around the sun (the Copernican System)
no strings attached — without conditions
non causa pro causa — the fallacy of giving as a reason for a conclusion a proposition not actually relevant to that conclusion.
non-contemporaneous — living or occurring during the same period of time; contemporary.
north-central state — a state of N Nigeria. Capital: Kaduna. Pop: 4 438 007 (1995 est). Area: 46 053 sq km (17 781 sq miles)
northwest ordinance — the act of Congress in 1787 providing for the government of the Northwest Territory and setting forth the steps by which its subdivisions might become states.
noughts and crosses — tick-tack-toe (def 1).
noughts-and-crosses — tick-tack-toe (def 1).
objectfuscated code — (humour, programming) Object-oriented code which has been abstracted to so many levels that no-one can understand it anymore. A play on obfuscated code.
obsolescence clause — a clause in an insurance policy that takes account of the obsolescence of the item insured in order to lower the amount to be paid out in the event of a claim
oceanus procellarum — (Ocean of Storms) the largest dark plain on the face of the moon, in the second and third quadrants: about 2 million square miles (5.2 million sq. km).
of one's own accord — to be in agreement or harmony; agree.
oil-catalyst slurry — Oil-catalyst slurry is a heavy aromatic by-product of a refinery's fluid catalytic cracking unit, that forms a small part of global fuel oil supply.
old church slavonic — the oldest attested Slavic language, an ecclesiastical language written first by Cyril and Methodius in a Bible translation of the 9th century and continued in use for about two centuries. It represents the South Slavic, Bulgarian dialect of 9th-century Salonika with considerable addition of other South and West Slavic elements. Abbreviation: OCS.
old spanish customs — irregular practices among a group of workers to gain increased financial allowances, reduced working hours, etc
olive-backed thrush — Swainson's thrush.
on an empty stomach — If you do something on an empty stomach, you do it without having eaten.
on cue/as if on cue — If you say that something happened on cue or as if on cue, you mean that it happened just when it was expected to happen, or just at the right time.
on no consideration — for no reason whatsoever; never
open-hearth process — a process of steelmaking in which the charge is laid in a furnace (open-hearth furnace) on a shallow hearth and heated directly by burning gas as well as radiatively by the furnace walls.
operations director — a director or senior manager who oversees the efficiency of business operations
operations research — the analysis, usually involving mathematical treatment, of a process, problem, or operation to determine its purpose and effectiveness and to gain maximum efficiency.
optical double star — two stars that appear as one if not viewed through a telescope with adequate magnification, such as two stars that are separated by a great distance but are nearly in line with each other and an observer (optical double star) or those that are relatively close together and comprise a single physical system (physical double star)
ordnance survey map — An Ordnance Survey map is a detailed map produced by the British or Irish government map-making organization.
orthopaedic surgeon — a surgeon specializing in the branch of surgery concerned with disorders of the spine and joints and the repair of deformities of these parts
orthopaedic surgery — surgery concerned with disorders of the spine and joints and the repair of deformities of these parts
oscillating circuit — a circuit producing electrical oscillations.
pancreatic fibrosis — cystic fibrosis.
parallel processing — extending in the same direction, equidistant at all points, and never converging or diverging: parallel rows of trees.
parasympathomimetic — having an effect similar to that produced when the parasympathetic nervous system is stimulated

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