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positive gloss
positive prescription
positive vetting
positive yield curve
positively
positivism
positron
positron emission tomography
positronium
posole
posology
posse
posse cut
possess
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possession order
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positronium
pos·i·tro·ni·um [ pòzzə trṓnee əm ] (plural pos·i·tro·ni·ums)


noun 
Definition:
 
short-lived particle: a combination of a positron and an electron that rapidly decays to produce two or three photons
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