ˈepəmə(r) noun
also epim·er·ide ə̇ˈpiməˌrīd
( -s )
Etymology: epimer from epi- + -mer; epimeride from epimer + -ide
: either of two stereoisomers of a compound containing more than one asymmetric carbon atom that differ in the arrangement of groups around only one of the asymmetric carbons ; specifically : either of the stereoisomers of a sugar or sugar derivative that differ in the arrangement around the asymmetric carbon next to the carbonyl or carboxyl group
glucose and mannose are epimers