
A micrograph, or photomicrograph, is a photograph or digital image taken through a microscope or similar device to show a magnified image of an item. This is opposed to a macrographic image, which is at a scale that is visible to the naked eye. Micrographs are widely used in all fields of microscopy. ...
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http://en.wikipedia.org/wiki/Micrograph

instrument used to write on a very small scale
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http://phrontistery.info/m.html

• (n.) An instrument for executing minute writing or engraving.
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http://thinkexist.com/dictionary/meaning/micrograph/

<microscopy> A graphic reproduction of an object as formed by the microscope or equivalent optical instrument. ... (05 Aug 1998) ...
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http://www.encyclo.co.uk/local/20973

(mi´kro-graf″) an instrument for recording very minute movements by making a greatly magnified photograph of the minute motions of a diaphragm. a photograph of a minute object or specimen as seen through a microscope. electron micrograph a graphic reproduction of an ob...
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http://www.encyclo.co.uk/local/21001
Mi'cro·graph noun [ See
Micrography .] An instrument for executing minute writing or engraving.
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http://www.encyclo.co.uk/webster/M/62

Type: Term Pronunciation: mī′krō-graf Definitions: 1. An instrument that magnifies the microscopic movements of a diaphragm by means of light interference and records them on a moving photographic film; may be used for recording various pulse curves, sound waves, and any forms of motion that may be communicated through the air to a ...
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http://www.medilexicon.com/medicaldictionary.php?t=55191

micrography, micrograph, micrographic 1. An apparatus used for miniature writing or drawing. 2. The art or technique of writing with extremely small characters. 3. In psychiatry, abnormally small handwriting, as a symptom of a nervous disorder. 4. An instrument that magnifies the microscopic movements of a diaphragm by means of light interference a...
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http://www.wordinfo.info/words/index/info/view_unit/2724/41

A graphic reproduction of the prepared surface of a specimen at a magnification greater than ten diameters. When photographed, the reproduction is known as a photomicrograph (not a microphotograph).
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https://steelforge.com/literature/steelog-the-5000-word-metals-glossary/

A micrograph is produced when a section of the coating is taken, polished to show the particulate layers and then photographed through a microscope.
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https://www.encyclo.co.uk/local/20828

A graphic reproduction of the prepared surface of a specimen at a magnification greater than ten diameters. When photographed, the reproduction is known as a photomicrograph
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https://www.unifiedalloys.com/resources/glossary/
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