ultramicrotome

[uhl-truh-mahy-kruh-tohm]

noun Histology.

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

Origin of ultramicrotome

First recorded in 1945–50; ultra- + microtome
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019