negatron noun. ['nɛgǝtrɒn] E20.
[from NEGA(TIVE adjective + -TRON.]
1. Electronics. A valve with negative resistance, having an anode on one side of the cathode and a control grid and second anode on the other side. Now rare. E20.

2. Physics. An ordinary negatively charged electron (as distinct from a positron). Also called negaton. M20.

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