photoelectric tube

noun Electronics. Unabridged


[foh-tuh-toob, -tyoob]
noun Electronics.
an electron tube with a photosensitive cathode, used like a photocell.
Also called photoelectric tube.

1925–30; photo- + tube Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
phototube (ˈfəʊtəʊˌtjuːb)
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 10th Edition
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