isomer has definitions from the field of chemistry
1
[ noun ] (chemistry) a compound that exists in forms having different arrangements of atoms but the same molecular weight

Used in print

(Jay C. Harris and John R. Van Wazer, "Detergent...)

In the over-all process , it is difficult to assign a `` pure '' role to each constituent of a built detergent formulation ; and , indeed , there is no_more reason to separate the interrelated roles of the active , builder , antiredeposition agent , etc. than there is to assign individual actions to each of the numerous isomers making_up a given commercial organic active .

Related terms

compound

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