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mi·cron (μ),

Former term for micrometer.
Farlex Partner Medical Dictionary © Farlex 2012


A unit of length equal to 10–6 m.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.


Former term for the measurement now termed a micrometer.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012


Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005


An SI unit of length equal to one millionth of a metre (10−6 m). Symbol: μm. Syn. micron (obsolete term). See nanometre.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann


(mcm) (mīkrō-mētĕr, mī-kromĕ-tĕr)
1. One millionth of a meter; formerly called a micron.
2. A device for measuring various objects in an accurate and precise manner.
3. In medicine and biology, the term is usually used with reference to a glass slide or lens that is accurately marked for measuring microscopic forms.
Synonym(s): micrometre.
[micro- + G. metron, measure]
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
Novacine silica products are a type of quartz with an average particle size of 3-7 microns. Novacite differs from other silicas in its low sorptive properties and low abrasiveness.
Average particle size from 18 to 800 microns maintain platelet structure with a high diameter-to-thickness ratio.
Alumina trihydrate in particle sizes from 3.5 to 33 microns. Custom blends of ATH with Amical calcium carbonate serve as cost-effective systems for spray-up.
Trexel has recently demonstrated continuous extrusion of MuCell foams with cell sizes below 10 microns. "If the commercial market requires smaller and smaller cells, we know we can do it, but much of the current work is in the 10-30 micron range, where we can get the properties desired," says Bernstein.
Flakes have a silvery, off-white color, average thickness of 0.5-2 microns and 2-150 micron diam.
Available in twenty-one standard grades in particle-size distributions ranging from 65% to 100% minus 325 mesh, with median particle sizes of 4-30 microns. Also specialty superfine ground aluminas with a median particle size of 1.5 microns and a top size of less than 10 microns.
Fiber diameters range from 30 to 150 microns with lengths from 1 to 3 mm.
Planck recently released color images of the Milky Way's frigid dust tapestries at wavelengths out to 540 microns; see last month's issue, page 16.
Twenty-one particle-size distributions from 65% to 100% minus 325 mesh with median particle sizes of 2.5 to 30 microns. Also super-fine ground fillers with a median particle size of 1.5 microns and top size of less than 10 microns, and 12 grades of hydrated alumina/calcium carbonate blends.