positronium
[ poz-i-troh-nee-uh m ]
/ ˌpɒz ɪˈtroʊ ni əm /
noun Physics.
a short-lived atomic system consisting of a positron and an electron bound together.
Words nearby positronium
positively,
positivism,
positivity,
positron,
positron emission tomography,
positronium,
posole,
posology,
poss,
poss.,
posse
British Dictionary definitions for positronium
positronium
/ (ˌpɒzɪˈtrəʊnɪəm) /
noun
physics
a short-lived entity consisting of a positron and an electron bound together. It decays by annihilation to produce two or three photons
Word Origin for positronium
C20: from
positron +
-ium