Medical Term:

stereoisomerism

Pronunciation: ster′ē-ō-ī-som′ĕr-izm

Definition: Molecular asymmetry, isomerism involving different spatial arrangements of the same groups (androsterone and isoandrosterone, differing only in that one has a 3α-OH, the other a 3β-OH).

Synonym(s): stereochemical isomerism

See Also: stereoisomer, Le Bel-van't Hoff rule

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