noun
megatron
MEHG-uh-tron
noun
1
A type of sealed electronic tube once used to generate signals for lighthouses and submersibles.
"The old lighthouse still used a megatron to power its warning beam."
How to Use Megatron
Learner’s notesIn plain EnglishA specialised vacuum tube from early electronics, mostly known today because it shares a name with a famous cartoon villain.
Common mistake
Almost everyone who hears this word today thinks of the Transformers character rather than the obscure electronic component.
Word Forms
megatrons plural, Megatronz plural, Megatrons plural
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The old lighthouse still used a _____ to power its warning beam.
Etymology
An old technical term for the tube, unrelated to the fictional robot villain of the same name from the Transformers franchise, which was coined separately.