microtome

Could be construed as either micro +‎ -tome or micro- +‎ tome.

microtome (plural microtomes)

1. A special instrument that produces very thin slices of plant and animal tissues, for later examination by light microscope or electron microscope.

microtome (third-person singular simple present microtomes, present participle microtoming, simple past and past participle microtomed)

1. To cut into sections using a microtome

micro- +‎ -tome

microtome m (plural microtomes)

1. microtome

• microtomie