1. An evaporation technique in which the evaporant is heated with electron bombardment.
2. An electronic transducer, either fixed or adjustable, that reduces the amplitude of a wave without causing significant distortion.

Electron beam evaporation is a commonly used process for coating lenses and filters with anti-reflection, scratch-resistant or other specialized coatings.

The process is also commonly used for coating insulating and resistor films on electronic components.