phototube
[ foh-tuh-toob, -tyoob ]
/ ˈfoʊ təˌtub, -ˌtyub /
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noun Electronics.
an electron tube with a photosensitive cathode, used like a photocell.
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Also called photoelectric tube.
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Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
British Dictionary definitions for phototube
phototube
/ (ˈfəʊtəʊˌtjuːb) /
noun
a type of photocell in which radiation falling on a photocathode causes electrons to flow to an anode and thus produce an electric current
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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