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capable of acting as a proton donor (strongly or weakly acidic as a Brønsted acid), osake või aine, mis võib toimida prootonite doonorina
protogeenne . Keemiaterminite baas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//kem/protogeenne/1/est (05.07.2026)