Definition of alphatron in English:

alphatron

noun

Physics historical
  • An ionization gauge in which the passage of alpha particles through a near-vacuum generates an ionization current by means of which the pressure of the residual gas may be measured. Frequently attributive Now historical.

Origin

1940s (in an earlier sense). From alpha + -tron.

Pronunciation

alphatron

/ˈalfətrɒn/