Topic: MATHS
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| Date: | 1100-1200 |
| Language: | Old French |
| Origin: | multiplier, from Latin multiplicare, from multiplex; MULTIPLEX |
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mul‧ti‧ply
past tense and past participle multiplied, present participle multiplying, third person singular multiplies
past tense and past participle multiplied, present participle multiplying, third person singular multiplies1 [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.
Children will learn to multiply in the second grade.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.
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.
Bacteria multiply quickly in warm food.