ultramicrotome
ul·tra·mi·cro·tome
noun \-ˈmī-krə-ˌtōm\Definition of ULTRAMICROTOME
: a microtome for cutting extremely thin sections for electron microscopy
— ul·tra·mi·crot·o·my \-mī-ˈkrä-tə-mē\ noun
First Known Use of ULTRAMICROTOME
1946
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