Definition of -tron in English:

-tron

suffix

Physics
1Denoting a subatomic particle: positron
2Denoting a particle accelerator: cyclotron
3Denoting a thermionic valve: ignitron

Origin

from (elec)tron.

Definition of -tron in:

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Word of the day hubris
Pronunciation: ˈhjuːbrɪs
noun
excessive pride or self-confidence