slide rule

noun

Definition of slide rule

  1. :  a manual device used for calculation that consists in its simple form of a ruler and a movable middle piece which are graduated with similar logarithmic scales

First Known Use of slide rule

1663


SLIDE RULE Defined for English Language Learners

slide rule

noun

Definition of slide rule for English Language Learners

  • : an old-fashioned instrument that is like a ruler with a middle piece that slides back and forth and that is used to do calculations


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