from Wiktionary, Creative Commons Attribution/Share-Alike License.
- verb To add
thoriumor thorium oxide to a substance in order to increase its thermionic flow
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- verb impregnate with thorium oxide to increase thermionic emission
from Wiktionary, Creative Commons Attribution/Share-Alike License
Derived from "thorium"
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