a substance consisting of molecules characterized by the sequence of one or more types of monomer units and comprising a simple weight majority of molecules containing at least three monomer units which are covalently bound to at least one other monomer unit or other reactant and consists of less than a simple weight majority of molecules of the same molecular weight, aine, mille molekulid koosnevad vähemalt kolmest järjestikuliselt paiknevast ühesugusest või erinevast monomeerühikust, millest igaüks on kovalentselt seotud vähemalt ühe monomeerühiku või muu reagendiga ning mille molekulidest vähem kui pooltel on sama molekulmass