# slide rule

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## slide rule

*n.*

A device consisting of two logarithmically scaled rules mounted to slide along each other so that multiplication, division, and other more complex computations are reduced to the mechanical equivalent of addition or subtraction.

## slide rule

*n*

(Mathematics) a mechanical calculating device consisting of two strips, one sliding along a central groove in the other, each strip graduated in two or more logarithmic scales of numbers, trigonometric functions, etc. It employs the same principles as logarithm tables

## slide′ rule`

*n.*

a mechanical calculator consisting of a ruler with a sliding section, both bearing logarithmic scales.

[1875–80]

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Noun | 1. | slide rule - analog computer consisting of a handheld instrument used for rapid calculations; have been replaced by pocket calculatorsanalog computer, analogue computer - a computer that represents information by variable quantities (e.g., positions or voltages) |

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