- a metric unit of length equal to approximately 1.094 yards
- the basic SI unit of length; the length of the path travelled by light in free space during a time interval of 1/299 792 458 of a second. In 1983 this definition replaced the previous one based on krypton-86, which in turn had replaced the definition based on the platinum-iridium metre bar kept in Paris
WordReference Random House Learner's Dictionary of American English © 2026
me•tre /ˈmitɚ/USA pronunciation
n., v., -tred, -tring.
WordReference Random House Unabridged Dictionary of American English © 2026- Weights and Measures, British Terms[Chiefly Brit.]meter.
me•tre
(mē′tər),USA pronunciation n., v., -tred, -tring. [Brit.]
- Weights and Measures, British Termsmeter.
Collins Concise English Dictionary © HarperCollins Publishers::
metre, US meter /ˈmiːtə/ n
metre, US meter /ˈmiːtə/ n
- the rhythmic arrangement of syllables in verse, usually according to the number and kind of feet in a line
- another word (esp US) for time
me•ter1 /ˈmitɚ/USA pronunciation
n. [countable]
me•ter2 /ˈmitɚ/USA pronunciation n.
me•ter3 /ˈmitɚ/USA pronunciation n. [countable]
v. [~ + object]
-meter-, root.
WordReference Random House Unabridged Dictionary of American English © 2026- Weights and Measuresa unit of length, equivalent to 39.37 U.S. inches;
now defined as 1&sfracdenom;299,792,458&sfracend; of the distance light travels in a vacuum in one second. Abbr.: m
me•ter2 /ˈmitɚ/USA pronunciation n.
- Music and Dance
- [uncountable] the rhythmic element in music.
- [countable] the unit of measurement adopted for a given piece of music.
- Poetry[uncountable] the arrangement of words in poetic rhymes.
me•ter3 /ˈmitɚ/USA pronunciation n. [countable]
- Weights and Measuresan instrument for measuring and recording the quantity of something, as of water, miles, or time:an electric meter.
- parking meter:a few more minutes left on the meter.
v. [~ + object]
- to measure by means of a meter:The gas was metered.
- Stampsto process (mail) by means of a postage meter.
-meter-, root.
- Weights and Measures -meter- comes from Greek, where it has the meaning "measure.'' This meaning is found in such words as: anemometer, barometer, centimeter, diameter, geometry, kilometer, meter, metric, metronome, odometer, parameter, pedometer, perimeter, symmetry.
me•ter1
(mē′tər),USA pronunciation n.
me•ter2 (mē′tər),USA pronunciation n.
me•ter3 (mē′tər),USA pronunciation n.
v.t.
-meter,
- Weights and Measuresthe fundamental unit of length in the metric system, equivalent to 39.37 U.S. inches, originally intended to be, and being very nearly, equal to one ten-millionth of the distance from the equator to the pole measured on a meridian: defined from 1889 to 1960 as the distance between two lines on a platinum-iridium bar (the "International Prototype Meter'') preserved at the International Bureau of Weights and Measures near Paris;
from 1960 to 1983 defined as 1,650,763.73 wavelengths of the orange-red radiation of krypton 86 under specified conditions;
and now defined as 1⁄299,792,458 of the distance light travels in a vacuum in one second. Abbr.: m Also,[Brit.,] metre.
- Greek métron measure
- French mètre
- 1790–1800
me•ter2 (mē′tər),USA pronunciation n.
- Music and Dance
- the rhythmic element as measured by division into parts of equal time value.
- the unit of measurement, in terms of number of beats, adopted for a given piece of music. Cf. measure (def. 14).
- [Pros.]
- poetic measure;
arrangement of words in regularly measured, patterned, or rhythmic lines or verses. - a particular form of such arrangement, depending on either the kind or the number of feet constituting the verse or both rhythmic kind and number of feet (usually used in combination):pentameter;dactylic meter;iambic trimeter.
- poetic measure;
- Latin as above
- Middle French
- Greek métron measure; replacing Middle English metre
- Latin metrum poetic meter, verse
- Middle English metir, metur, Old English meter bef. 900
me•ter3 (mē′tər),USA pronunciation n.
- Weights and Measuresan instrument for measuring, esp. one that automatically measures and records the quantity of something, as of gas, water, miles, or time, when it is activated.
- See parking meter.
v.t.
- to measure by means of a meter.
- Stampsto process (mail) by means of a postage meter.
- see mete1, -er1 1805–15
-meter,
- Weights and Measuresa combining form meaning "measure,'' used in the names of instruments measuring quantity, extent, degree, etc.:altimeter; barometer.Cf. -metry.
- Greek métron measure
- Neo-Latin -metrum
'metre' also found in these entries (note: many are not synonyms or translations):
air
- Alcaic
- Alexandrine
- ampere
- atmosphere
- bar
- barn
- base unit
- centiare
- centimetre
- concentration
- couplet
- cubic
- cusec
- decimetre
- density
- dimeter
- electric constant
- electromagnetic spectrum
- electron
- expletive
- fermi
- foot
- fundamental unit
- gamma
- Gunnell
- inch
- irradiance
- Johnson
- joule
- line
- luminance
- lux
- m
- magnetic constant
- measure
- meter
- metre-kilogram-second
- metric
- metric system
- metrical
- micron
- millibar
- millimetre
- mks units
- nanometre
- neutron star
- newton
- nit
- gravimeter