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a union formed by a single atom which is the only common member of two rings., ühe aatomi vahendusel moodustunud ühendus kahe tsükli vahel mingi ühendi molekulis
spiro-ühendus . Keemiaterminite baas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//kem/spiro-%C3%BChendus/1/est (02.07.2026)
