18-letter words containing q, r
- acquired behaviour — the behaviour of an organism resulting from the effects of the environment
- acquired character — a modification of structure or function caused by environmental factors: now generally regarded as not inheritable
- algebraic equation — an equation in the form of a polynomial having a finite number of terms and equated to zero, as 2 x 3 + 4 x 2 − x + 7 = 0.
- auxiliary equation — characteristic equation (def 1b).
- auxiliary-equation — Mathematics. the characteristic polynomial of a given matrix, equated to zero. Also called auxiliary equation. an equation with one variable and equated to zero, which is derived from a given linear differential equation and in which the coefficient and power of the variable in each term correspond to the coefficient and order of a derivative in the original equation.
- back to square one — If you are back to square one, you have to start dealing with something from the beginning again because the way you were dealing with it has failed.
- barbershop quartet — a group of four singers who perform a style of music sung in four-part harmony
- bernoulli equation — Hydrodynamics. Bernoulli's theorem (def 2).
- briquet's syndrome — somatization disorder.
- cash-for-questions — of, involved in, or relating to a scandal in which some MPs were accused of accepting bribes to ask particular questions in Parliament
- charge of quarters — a member of the armed forces who handles administration in his or her unit, esp after duty hours
- chlorohydroquinone — a white to light-tan, crystalline, water-soluble solid, C 6 H 3 Cl(OH) 2 , used chiefly in organic synthesis and as a developer in photography.
- combination square — an adjustable device for carpenters, used as a try square, miter square, level, etc.
- court of exchequer — (formerly) an English civil court where Crown revenue cases were tried
- distress frequency — a radio frequency band reserved for emergency signals from aircraft or ships in distress.
- eastern algonquian — a subgroup of the Algonquian language family, comprising the languages spoken aboriginally from Nova Scotia to northeastern North Carolina.
- entry requirements — the types and grades of examination required to enter a university
- equine herpesvirus — a viral disease of horses that may cause respiratory signs, abortion, neonatal death, and paresis. A vaccine is available against this disease
- equinoctial circle — celestial equator
- equinoctial spring — either of the two highest spring tides that occur at the equinoxes
- equivalent circuit — an arrangement of simple electrical components that is electrically equivalent to a complex circuit and is used to simplify circuit analysis
- exercise equipment — equipment that can be used for exercising, such as tread mills, rowing machines, etc
- expected frequency — the number of occasions on which an event may be presumed to occur on average in a given number of trials
- formal equivalence — the relation that holds between two open sentences when their universal closures are materially equivalent
- frequency function — probability density function (def 2).
- frequency response — the effectiveness with which a circuit, device, or system processes and transmits signals fed into it, as a function of the signal frequency.
- frequency spectrum — The frequency spectrum of an electrical signal is the distribution of the amplitudes and phases of each frequency component against frequency.
- headquarters staff — the people who work at the headquarters of an organization
- hemidemisemiquaver — a sixty-fourth note.
- hydroxychloroquine — a colorless crystalline solid, C 18 H 26 ClN 3 O, used in the treatment of malaria, lupus erythematosus, and rheumatoid arthritis.
- inquisitor-general — the head of the Spanish court of Inquisition
- inverse square law — one of several laws relating two quantities such that one quantity varies inversely as the square of the other, as the law that the illumination produced on a screen by a point source varies inversely as the square of the distance of the screen from the source.
- liqueur chocolates — chocolates containing liqueur
- liquid distributor — A liquid distributor is a device which is used to spread liquid when it enters a packed column (= a tall vessel with packing, used for separating substances).
- major tranquilizer — antipsychotic (def 2).
- minor tranquilizer — antianxiety drug.
- mosquito repellent — a chemical substance, such as a spray or lotion, applied to the body to prevent mosquitoes biting
- oblique projection — something that is oblique.
- portable equipment — Portable equipment is electrical equipment that can easily be moved from one place to another while in operation or while connected to the supply.
- qattara depression — a desert basin in the Libyan Desert, in NW Egypt: lowest point is 435 feet (133 meters) below sea level. 6950 sq. mi. (18,000 sq. km).
- quadratic equation — an equation containing a single variable of degree 2. Its general form is ax 2 + bx + c = 0, where x is the variable and a, b, and c are constants (a ≠ 0).
- quality controller — a person responsible for checking that the goods or services produced by an organization are of an acceptable standard
- quality of service — (communications, networking) (QoS) The performance properties of a network service, possibly including throughput, transit delay, priority. Some protocols allow packets or streams to include QoS requirements.
- quantity surveying — the action or profession of a person who estimates the cost of the materials and labour necessary for a construction job
- quarry-tiled floor — a floor covered with square or diamond-shaped unglazed floor tiles
- quarter-wave plate — a crystal thin enough to cause a phase difference of 90° between the ordinary and extraordinary rays of polarized light, thereby converting circularly polarized light into plane polarized light.
- quarterlife crisis — a crisis that may be experienced in one's twenties, involving anxiety over the direction and quality of one's life
- quartz-iodine lamp — a type of tungsten-halogen lamp containing small amounts of iodine and having a quartz envelope, operating at high temperature and producing an intense light for use in car headlamps, etc
- queen's university — A Canadian University. Source of GVL, NIAL, Pasqual, Q'NIAL and TXL.
- quick off the mark — If you are quick off the mark, you are quick to understand or respond to something. If you are slow off the mark, you are slow to understand or respond to something.
On this page, we collect all 18-letter words with Q-R. It’s easy to find right word with a certain length. It is the easiest way to find 18-letter word that contains in Q-R to use in Scrabble or Crossword puzzles