19-letter words containing a, n, u, m, b
- pseudorandom number — (programming) One of a sequence of numbers generated by some algorithm so as to have an even distribution over some range of values and minimal correlation between successive values. Pseudorandom numbers are used in simulation and encryption. They are pseudorandom not random because the sequence eventually repeats exactly and is entirely determined by the initial conditions. One of the simplest algorithms is x[i+1] = (a * x[i] + c) mod m but this repeats after at most m numbers and successive numbers are closely related. Better algorithms generally use more previous numbers to calculate the next number.
- registration number — number on vehicle licence plate
- republic of vietnam — the name (from 1955–75) for South Vietnam, as an independent republic, following the division of the country in 1954 into North Vietnam and South Vietnam
- semibituminous coal — a coal intermediate between bituminous and anthracite coal in hardness, yielding the maximum heat of any ordinary steam coal.
- spin quantum number — the quantum number that designates the total angular momentum associated with electron spin and has a value of ½ in units of h /2π.
- standing broad jump — a jump for distance from a standing position.
- strawberry geranium — a plant, Saxifraga stolonifera (or S. sarmentosa), of the saxifrage family, native to eastern Asia, that has rounded, variegated leaves and numerous threadlike stolons and is frequently cultivated as a houseplant.
- submandibular gland — either of a pair of salivary glands located one on each side of and beneath the lower jaw.
- subminiature camera — a very small, palm-sized still camera for taking photographs on 16-millimeter or similar film.
- subsistence farming — farming whose products are intended to provide for the basic needs of the farmer, with little surplus for marketing.
- the compassion club — (in Canada) a nonprofit organization that provides uncontaminated cannabis for medical purposes and natural therapies in a safe environment
- the labour movement — a movement campaigning for the interests of working people, for example for better working conditions, better treatment from employers, etc
- thumb one's nose at — to deride or mock, esp by placing the thumb on the nose with fingers extended
- transference number — that fraction of the total electric current that anions and cations carry in passing through an electrolytic solution.
- turbo-ramjet engine — a combination engine that can be operated as a turbojet or ramjet engine.
- unlimited liability — liability that is not restricted to any unpaid portion of nominal capital invested in a business
- yablonovy mountains — a mountain range in Siberia. Highest peak: 1680 m (5512 ft)