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sulfonium

[suhl-foh-nee-uh m] /sʌlˈfoʊ ni əm/
noun, Chemistry
1.
the positively charged group H 3 S + , its salts, or their substitute products.
Origin
1890-1895
1890-95; sulf(ur) + (amm)onium
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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