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ultramicrotome

American

[uhl-truh-mahy-kruh-tohm] / ˌʌl trəˈmaɪ krəˌtoʊm /

noun

Histology.

a microtome capable of producing very fine slices of tissue or cellular specimens for electron microscopic examination.

First recorded in 1945–50; ultra- + microtome

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023