1

micrometer

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noun mi·crom·e·ter \mī-ˈkrä-mə-tər\

Definition of micrometer

  1. 1 :  an instrument used with a telescope or microscope for measuring minute distances

  2. 2 :  a caliper for making precise measurements that has a spindle moved by a finely threaded screw

Illustration of micrometer

Origin and Etymology of micrometer

French micromètre, from micr- + -mètre -meter


First Known Use: 1670


2

micrometer

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noun mi·cro·me·ter \ˈmī-krō-ˌmē-tər\

Definition of micrometer

  1. :  a unit of length equal to one millionth of a meter —called also micron — see metric system table

Origin and Etymology of micrometer

International Scientific Vocabulary micr- + 3meter


First Known Use: 1880


MICROMETER Defined for Kids

micrometer

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noun mi·crom·e·ter \mī-ˈkrä-mə-tər\

Definition of micrometer for Students

  1. 1 :  an instrument used with a telescope or microscope for measuring very small distances

  2. 2 :  an instrument having a rod moved by fine screw threads and used for making exact measurements


Medical Dictionary

1

micrometer

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noun mi·crom·e·ter \mī-ˈkräm-ət-ər\

Medical Definition of micrometer

  1. :  an instrument used with a telescope or microscope for measuring minute distances


2

micrometer

noun mi·cro·me·ter
variants: or chiefly British

micrometre

\ˈmī-krō-ˌmēt-ər\play

Medical Definition of micrometer

  1. :  micron



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