metrology


me·trol·o·gy

noun \me-ˈträ-lə-jē\

Definition of METROLOGY

1
:  the science of weights and measures or of measurement
2
:  a system of weights and measures
met·ro·log·i·cal \ˌme-trə-ˈlä-ji-kəl\ adjective
me·trol·o·gist \me-ˈträ-lə-jist\ noun

Origin of METROLOGY

French métrologie, from Greek metrologia theory of ratios, from metron measure — more at measure
First Known Use: 1816

me·trol·o·gy

noun \me-ˈträl-ə-jē\   (Medical Dictionary)
plural me·trol·o·gies

Medical Definition of METROLOGY

1
: the science of weights and measures or of measurement
2
: a system of weights and measures
met·ro·log·i·cal \ˌme-trə-ˈläj-i-kəl\ adjective
met·ro·log·i·cal·ly \-k(ə-)lē\ adverb
me·trol·o·gist \me-ˈträl-ə-jəst\ noun

metrology

noun    (Concise Encyclopedia)

Science of measurement. Measuring a quantity means establishing its ratio to another fixed quantity of the same kind, known as the unit of that kind of quantity. A unit is an abstract idea, defined either by reference to a randomly chosen material standard or to a natural phenomenon. For example, the metre, the standard of length in the metric system, was formerly defined (1889–1960) by the separation of two lines on a particular metal bar, but it is now defined as the distance traveled by light in a vacuum in 1/299,792,458 second. See also International System of Units.

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