micrometer noun - Definition, pictures, pronunciation and usage notes | Oxford Advanced American Dictionary at OxfordLearnersDictionaries.com

Definition of micrometer noun from the Oxford Advanced American Dictionary

micrometer

noun

(Canadian English usually micrometre) noun

NAmE//maɪˈkrɑmət̮ər//

1(symbol µm) a unit for measuring length, equal to one millionth of a meter

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2a device used for measuring very small distances or spaces, using a screw with a very fine thread

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