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ultramicrotome

[uhl-truh-mahy-kruh-tohm] /ˌʌl trəˈmaɪ krəˌtoʊm/
noun, Histology
1.
a microtome capable of producing very fine slices of tissue or cellular specimens for electron microscopic examination.
Origin
1945-1950
1945-50; ultra- + microtome
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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