Definition of phototube in English:


Syllabification: pho·to·tube
Pronunciation: /ˈfōtōˌt(y)o͞ob


  • A photocell in the form of an electron tube with a photoemissive cathode.
    More example sentences
    • Aliquots of 2 mL of the virus-photoproducts solution were placed in quartz phototubes, capped, and bubbled with oxygen for 5 min before being irradiated.
    • Firefly flash and locomotion were observed using IR illumination that did not effect the phototube.

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Word of the day skosh
Pronunciation: skəʊʃ
a small amount; a little