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atom-like pair of particles consisting of an anti-electron (positron) and an electron, aatomitaoliste osakeste paar, mis koosneb antielektronist (positronist) ja elektronist
positroonium . Keemiaterminite baas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//kem/positroonium/1/est (13.07.2026)
