Cellulose ester yana nufin dangin mahadi da aka samar ta hanyar canza sinadarai na cellulose, polymer na halitta da ake samu a cikin tsire-tsire, tare da sinadarai iri-iri. Waɗannan gyare-gyare sun haɗa da maye gurbin ƙungiyoyin hydroxyl (-OH) a cikin kwayoyin halitta na cellulose tare da ƙungiyar ester (-COOR), inda R shine ƙungiyar alkyl ko aryl. Sakamakon esters cellulose sun inganta halayen jiki da sinadarai, irin su ƙãra solubility, mafi kyawun yanayin zafi, da kuma haɓaka juriya ga ruwa da mai, yana sa su zama masu amfani a cikin aikace-aikace iri-iri, kamar su a cikin sutura, fina-finai, robobi, da yadi.