Longman Dictionary of Contemporary English homepage

Topic: MATHS

Date: 1100-1200
Language: Old French
Origin: multiplier, from Latin multiplicare, from multiplex; MULTIPLEX

multiply

verb
     
mul‧ti‧ply past tense and past participle multiplied, present participle multiplying, third person singular multiplies
1 [intransitive and transitive]HM to do a calculation in which you add a number to itself a particular number of times [↪ divide]:
Children will learn to multiply in the second grade.
multiply something by something
Multiply the total by 12.
2 [intransitive and transitive] to increase by a large amount or number, or to make something do this:
The amount of information available has multiplied.
Smoking multiplies the risk of heart attacks and other health problems.
3 [intransitive] to breed:
Bacteria multiply quickly in warm food.
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