WordReference Random House Unabridged Dictionary of American English © 2026
field′-i•on mi′croscope
(fēld′ī′ən, -ī′on),USA pronunciation
- Opticsa device in which the atomic structure of the surface of a conductor is made visible by introducing helium gas into the device and applying a high voltage to ionize and accelerate the gas toward a fluorescent screen. Cf. field-emission microscope.
- 1950–55
'field-ion microscope' also found in these entries (note: many are not synonyms or translations):