Phototube

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A gas-filled electron tube that has a photosensitive cathode.

Synonyms

All synonyms
celltube

Etymology

From photo- + tube.

Related phrases

electron tubegas filled

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.