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A_________
Definitions
an unstable negatively charged proton; the antiparticle of a proton
Word origin
From anti- + proton.
Used in a sentence
“There were also particles no one had predicted that just appeared. Five of them […, i]n order of increasing modernity, […] are the neutrino, the pi meson, the antiproton, the quark and the Higgs boson.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer0 curated clues
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