micrometer

1
[ mahy-krom-i-ter ]
/ maɪˈkrɒm ɪ tər /

noun

any of various devices for measuring minute distances, angles, etc., as in connection with a telescope or microscope.
Also called mike. micrometer caliper. a precision instrument with a spindle moved by a finely threaded screw, for the measurement of thicknesses and short lengths, commonly used by machinists for turning shafts or boring holes.
Also especially British, mi·crom·e·tre.

Origin of micrometer

1
First recorded in 1660–70; micro- + -meter

Words nearby micrometer

micromere, micrometastasis, micrometeorite, micrometeoroid, micrometeorology, micrometer, micrometer screw, micromethod, micrometre, micrometry, micromicro-

British Dictionary definitions for micrometre (1 of 2)

micrometre
/ (ˈmaɪkrəʊˌmiːtə) /

noun

a unit of length equal to 10 –6 metre Symbol: μm Former name: micron

British Dictionary definitions for micrometre (2 of 2)

micrometer
/ (maɪˈkrɒmɪtə) /

noun

any of various instruments or devices for the accurate measurement of distances or angles
Also called: micrometer gauge, micrometer calliper a type of gauge for the accurate measurement of small distances, thicknesses, diameters, etc. The gap between its measuring faces is adjusted by a fine screw, the rotation of the screw giving a sensitive measure of the distance moved by the face

Derived forms of micrometer

micrometry, noun micrometric (ˌmaɪkrəʊˈmɛtrɪk) or micrometrical, adjective

Scientific definitions for micrometre (1 of 2)

micrometer 1
[ mī-krŏm′ĭ-tər ]

A device for measuring very small distances, angles, or objects, especially one based on the rotation of a finely threaded screw, as in relation to a microscope.

Scientific definitions for micrometre (2 of 2)

micrometer 2
[ mī′krō-mē′tər ]

A unit of length in the metric system equal to one millionth (10-6) of a meter. Also called micron