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Numbers British & World English

The fourth book of the Bible, relating the experiences of the Israelites in the wilderness after Moses led them out of Egypt

number British & World English

An arithmetical value, expressed by a word, symbol, or figure, representing a particular quantity and used in counting and making calculations

by numbers in number British & World English

Following simple instructions identified or as if identified by numbers

by numbers British & World English

Following simple instructions identified or as if identified by numbers

numbers game British & World English

The use or manipulation of statistics or figures, especially in support of an argument

natural numbers British & World English

The positive integers (whole numbers) 1, 2, 3, etc., and sometimes zero as well

amicable numbers British & World English

A pair of numbers, each of which is the sum of the factors of the other (e.g. 220 and 284)

paint-by-numbers British & World English

(Of a child’s picture) marked out in advance into sections which are numbered according to the colour to be used

there's safety in numbers in safety British & World English

Being in a group of people makes you feel more confident or secure about taking action

there's safety in numbers British & World English

Being in a group of people makes you feel more confident or secure about taking action

f-number British & World English

The ratio of the focal length of a camera lens to the diameter of the aperture being used for a particular shot (e.g. f8, indicating that the focal length is eight times the diameter)

E-number British & World English

A code number preceded by the letter E, denoting food additives numbered in accordance with EU directives

renumber British & World English

Change the number or numbers assigned to (something)

box number British & World English

A number identifying a private advertisement in a newspaper and functioning as an address for replies

back number British & World English

An issue of a periodical earlier than the current one

Mach British & World English

The ratio of the speed of a body to the speed of sound in the surrounding medium. It is often used with a numeral (as Mach 1, Mach 2, etc.) to indicate the speed of sound, twice the speed of sound, etc.

mass number British & World English

The total number of protons and neutrons in a nucleus

numbers pool in numbers game British & World English

A lottery based on the occurrence of unpredictable numbers in the results of races, a lottery, etc.

call number British & World English

A mark, especially a number, on the spine of a library book, or listed in the library’s catalog, indicating the book’s location in the library

personal identification number British & World English

A number allocated to an individual and used to validate electronic transactions

wave number British & World English

The number of waves in a unit distance

Z in atomic number British & World English

The number of protons in the nucleus of an atom, which is characteristic of a chemical element and determines its place in the periodic table

golden number British & World English

The number showing a year’s place in the Metonic lunar cycle, used to fix the date of Easter for that year

Froude number British & World English

A dimensionless number used in hydrodynamics to indicate how well a particular model works in relation to a real system

guide number British & World English

A measure of the power of a flashgun expressed in metres or feet

Köchel number British & World English

A number given to each of Mozart’s compositions in the complete catalogue of his works compiled by the Austrian scientist L. von Köchel (1800–77) and his successors

lepton number British & World English

A quantum number assigned to subatomic particles that is ±1 for leptons and 0 for other particles and is conserved in all known interactions

magic number British & World English

A figure regarded as significant in a particular context

mixed number British & World English

A number consisting of an integer and a proper fraction

octane number British & World English

A figure indicating the anti-knock properties of a fuel, based on a comparison with a mixture of isooctane and heptane

numbers racket in numbers game British & World English

A lottery based on the occurrence of unpredictable numbers in the results of races, a lottery, etc.

cetane number British & World English

A quantity indicating the ignition properties of diesel fuel relative to cetane as a standard

plate number British & World English

A serial number in the margin of a plate from which postage stamps are printed

serial number British & World English

An identification number showing the position of a printed or manufactured item in a series

square number British & World English

The product of a number multiplied by itself, e.g. 1, 4, 9, 16

whole number British & World English

A number without fractions; an integer

cardinal number British & World English

A number denoting quantity (one, two, three, etc.), as opposed to an ordinal number (first, second, third, etc.)

Fibonacci series British & World English

A series of numbers in which each number (Fibonacci number) is the sum of the two preceding numbers. The simplest is the series 1, 1, 2, 3, 5, 8, etc.

license number British & World English

North American term for registration222.

Mersenne number British & World English

A number of the form 2p−1, where p is a prime number. Such a number which is itself prime is also called a Mersenne prime

Nusselt number British & World English

A dimensionless parameter used in calculations of heat transfer between a moving fluid and a solid body

chromosome number British & World English

The characteristic number of chromosomes found in the cell nuclei of organisms of a particular species

compound number British & World English

A quantity expressed in terms of more than one unit or denomination, such as 5 feet 7 inches or 2 pounds 3 ounces

diploid number British & World English

The number of chromosomes present in the body cells of a diploid organism

ordinal number British & World English

A number defining the position of something in a series, such as ‘first’, ‘second’, or ‘third’. Ordinal numbers are used as adjectives, nouns, and pronouns

production number British & World English

A spectacular musical item, typically including song and dance and involving all or most of the cast, in a theatrical show or film

Prandtl number British & World English

A dimensionless parameter used in calculations of heat transfer between a moving fluid and a solid body, equal to cpv/k, where cp is the heat capacity per unit volume of the fluid, v its kinematic viscosity, and k its thermal conductivity

Rayleigh number British & World English

A dimensionless parameter that is a measure of the instability of a layer of fluid due to differences of temperature and density at the top and bottom


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