1. ultramicrotome - Noun
2. ultramicrotome - Verb
ultramicrotome (plural ultramicrotomes)
A microtome that cuts extremely thin slices of tissue, especially for use in electron microscopy.
ultramicrotome (third-person singular simple present ultramicrotomes, present participle ultramicrotoming, simple past and past participle ultramicrotomed)
To cut into sections by means of an ultramicrotome