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A unit of length equal to one millionth of a metre, used in many technological and scientific fields.
- ‘The human eye can only see objects as small as about 40 microns, but most oil contaminants are about 5 microns.’
- ‘Banning carry bags less than 20 microns or five microns doesn't quite matter because these bags are recyclable.’
- ‘The price differential between broader micron wools, used for carpets, and the finer microns, used for luxury clothing, is returning to normal.’
- ‘The reactors range in diameter from about 400 to 60 microns, or millionths of a meter.’
- ‘Nanowires are crystals only a few nanometers in diameter but up to several microns in length.’
- ‘They used computers to design the complex branching of the veins and arteries that ranged from 10 microns to 3 millimetres wide.’
- ‘To make fibers up to tens of microns across, scientists must align hundreds of the nanotubes into bundles.’
- ‘One micron is 1 millionth of a meter, and chips with narrower gaps between transistors can perform more functions faster.’
- ‘Most fluid inclusions are small, only a few microns to tens of microns in diameter, but large inclusions visible to the naked eye are known.’
- ‘The bubbles then expand to a much larger size, about 6,000 microns, or millionths of a meter - large enough to be seen with the unaided eye.’
- ‘At present, inkjet nozzles can achieve resolutions of about 25 microns, compared to the latest die size of 0.13 microns, using silicon.’
- ‘A nanometer is one-thousandth of a micron, which is one millionth of a meter.’
- ‘The tip has a microporosity of less than or equal to 0.22 microns.’
- ‘Primary fuel filters, once designed to remove 150-micron particles, are now rated for 10 microns.’
- ‘There's a thousand microns in a millimetre for reference there.’
- ‘Most of these creatures are quite small; from less than a micron in diameter to a few centimeters.’
- ‘While microscopic, the particles are large enough to be measured in microns, or millionths of a meter.’
- ‘Each ring - composed of polymer chains abandoned as the solvent receded - is several nanometers high and several microns wide.’
- ‘Their lengths vary greatly in a population, with the most common length being about a micron.’
- ‘Plastic shopping bags are currently about 15 microns thick (a micron is a thousandth of a millimetre).’
Late 19th century: from Greek mikron, neuter of mikros ‘small’.
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