18-letter words containing q, i, y, a
- 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.
- available quantity — The available quantity of a product is the amount of that product available, or currently available in the store.
- boole's inequality — the theorem that the probability of several events occurring is less than or equal to the sum of the probabilities of each event occurring.
- chebyshev equation — Tchebycheff equation.
- inconsequentiality — of little or no importance; insignificant; trivial.
- 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
- quantum efficiency — the number of electrons released by a photocell per photon of incident radiation of a given energy
- quarry-tiled floor — a floor covered with square or diamond-shaped unglazed floor tiles
- quasi-metaphysical — pertaining to or of the nature of metaphysics.
- quevedo y villegas — Francisco Gómez de. 1580–1645, Spanish poet and writer, noted for his satires and the picaresque novel La historia de la vida del Buscón (1626)
- quite the contrary — not at all, the very opposite
- relative frequency — the ratio of the number of times an event occurs to the number of occasions on which it might occur in the same period.
- sampling frequency — sample rate
- schwarz inequality — Also called Cauchy's inequality. the theorem that the inner product of two vectors is less than or equal to the product of the magnitudes of the vectors.
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