Definition of photoemitter in US English:

photoemitter

noun

  • See photoemission

    • ‘This photoemitter controls the placement as well as the width of bits of information recorded on magnetic tape.’
    • ‘The optical coupler is mounted in a lower part of the casing, and has a photoemitter and a photoreceiver that faces the photoemitter.’

Pronunciation

photoemitter

/-iˈmitər/