Definition of divisor in US English:

divisor

noun

Mathematics
• 1A number by which another number is to be divided.

• ‘Influenced by Gauss, Smith's most important contributions are in number theory where he worked on elementary divisors.’
• ‘Its proper divisors are 1, 2, 4, 7, and 14, and the sum of those divisors is 28.’
• ‘A pair of amicable numbers is a pair like 220 and 284 such that the proper divisors of one number sum to the other and vice versa.’
• ‘If our divisor remained unchanged, the calculation for the average would give us 95.00.’
• ‘After graduating in 1939 he began to work for his doctorate on the problem of divisors of almost periodic polynomials.’
1. 1.1 A number that divides into another without a remainder.
‘the greatest common divisor’
• ‘All positive integers n have at least one prime divisor: if n is prime, then it is its own prime divisor.’
• ‘Prime numbers are integers with no divisors other than 1 and themselves.’

Origin

Late Middle English: from French diviseur or Latin divisor, from dividere (see divide).

divisor

/dəˈvaɪzər//dəˈvīzər/