micrometre defined in 1951 yearmicrometre - micrometre (micron);
micrometre - Unit of length for microscopic objects. One thousandth of a millimetre. Usually written /an. The limit of resolution of a microscope using visible light is about one-fifth of a micrometre. A nanometre (formerly millimicron), one thousandth of a micrometre, is written run, and is ten Angstroms (the physicists' unit of small distance).
near micrometre in Knolik
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