19-letter words containing a, t, s, c, d
- megabits per second — (unit) (Mbps, Mb/s) Millions of bits per second. A unit of data rate. 1 Mb/s = 1,000,000 bits per second (not 1,048,576). E.g. Ethernet can carry 10 Mbps.
- metaphosphoric acid — an acid, HPO 3 , derived from phosphorous pentoxide, and containing the smallest amount of water of the phosphoric acids.
- meter-candle-second — a unit of light-exposure equivalent to one lux for one second.
- 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.
- necessary condition — prerequisite
- no strings attached — without conditions
- 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).
- nuclear disarmament — the gradual reduction and eventual elimination of all nuclear weapons in the world
- 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.
- 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 no consideration — for no reason whatsoever; never
- operations director — a director or senior manager who oversees the efficiency of business operations
- 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)
- 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
- particle dispersoid — A particle dispersoid is a suspension of solid particles in a gas.
- pedestrian crossing — place to cross road
- pedestrian precinct — A pedestrian precinct is a street or part of a town where vehicles are not allowed.
- piece de resistance — the principal dish of a meal.
- plastic deformation — In plastic deformation a material changes shape when a stress is applied to it and does not go back to its original state when the stress is removed.
- police headquarters — building where police are stationed
- post-and-rail fence — a fence constructed of upright wooden posts with horizontal timber slotted through it
- postage and packing — the cost of packing and mailing an item bought by post
- pseudo-aristocratic — of or relating to government by an aristocracy.
- pseudo-conservative — disposed to preserve existing conditions, institutions, etc., or to restore traditional ones, and to limit change.
- pseudo-intellectual — a person exhibiting intellectual pretensions that have no basis in sound scholarship.
- radius of curvature — the absolute value of the reciprocal of the curvature at a point on a curve.
- reactive depression — depression occurring in response to some situational stress, as loss of one's job.
- recording secretary — an officer charged with keeping the minutes of meetings and responsible for the records.
- redress the balance — to make a fair adjustment; see that justice is done
- religious education — religion as school subject
- reserved occupation — in time of war, an occupation from which one will not be called up for military service
- resonance radiation — radiation emitted by an atom or molecule, having the same frequency as that of an incident particle, as a photon, and usually involving a transition to the lowest energy level of the atom or molecule.
- rickettsial disease — any of several acute infectious diseases caused by ticks, mites, or body lice infected with rickettsiae. The main types include typhus, spotted fever, Q fever, trench fever, and tsutsugamushi disease
- royal correspondent — a journalist who reports on matters relating to royalty
- saccharolactic acid — mucic acid.
- sackcloth and ashes — a public display of extreme grief, remorse, or repentance
- saint patrick's day — March 17, observed by the Irish in honor of St. Patrick, the patron saint of Ireland.
- saint vitus's dance — chorea (def 2).
- san clemente island — an island off the coast of S California, in the Santa Barbara (Channel) Islands. 24 miles (38 km) long.
- sandwich generation — the generation of people still raising their children while having to care for their aging parents.
- santa rosa de copan — a town in W Honduras: site of extensive Mayan ruins.
- school of the squad — an institution where instruction is given, especially to persons under college age: The children are at school.
- screen actors guild — a labor union for motion-picture performers, founded in 1933. Abbreviation: SAG.
- secondary dentition — the permanent dentition
- secondary education — education at high-school level
- secondary infection — an infection resulting from another infection