Last Updated
：2025/11/20
positional isomer
（ plural ）
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(chemistry) any isomer that differs from another isomer only in the position of a substituent, or of a double or triple bond
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positional isomer
When analyzing the sample, the chemist discovered a positional isomer that explained the unexpected shift in reactivity.
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When analyzing the sample, the chemist discovered a positional isomer that explained the unexpected shift in reactivity.
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