proton

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"Maxtor" was identified as a proton-pump inhibitor that blocks production of stomach acid, and

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Definitions (4)

Toggle American Heritage definitions American Heritage Dictionary (1)

  1. noun A stable, positively charged subatomic particle in the baryon family having a mass 1,836 times that of the electron. See Table at subatomic particle.

Toggle Century definitions Century Dictionary (2)

Toggle GNU Webster definitions GNU Webster's 1913

Toggle WordNet definitions WordNet (1)

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Examples (50)

  • Like proton and anti-proton, or electron and positron. —  Angelmass
  • The extra radiant energy from that burp heats up A slightly, causing it to expand a bit more and therefore dump even more material onto B. Eventually—or so the theory goes—one of these cycles will dump enough matter onto B to trigger a proton-proton nuclear reaction in the surface. —  Warhorse
  • After the collision, the proton is moving opposite to its initial direction at 6.20 x 10^6 m / s. —  Yahoo! Answers: Latest Questions
  • "Maxtor" was identified as a proton-pump inhibitor that blocks production of stomach acid, and —  Boston.com Most Popular
  • A new heavy cousin of the proton was found hiding in a pile of data at the Fermi National Accelerator Laboratory in —  Science News / Features, Blog Entries, Column Entries, Issues, News Items and Book Reviews
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Etymologies (2)

Toggle American Heritage etymologies American Heritage Dictionary (1)

  1. From Greek prōton, neuter of prōtos, first; see per1 in Indo-European roots.

Toggle Century etymologies Century Dictionary (1)

  1. Greek πρῶτος, neuter of πρῶτος, first, first state of a thing; a thing in its first state.
 

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/ˈproʊtɑn/
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