A combining form used in chemistry to indicate the presence of an arsenic-containing group, particularly in organic compounds.
From arsenic plus -o, a common combining form vowel in chemical nomenclature. Used in systematic naming of complex organic molecules.
Chemistry prefixes like arsono-, phenyl-, or methyl- are like molecular LEGO blocks—chemists can snap them together to name almost any compound they discover or create, even ones that don't exist in nature yet.
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