See also: SDR and sḏr Translingual Etymology Abbreviation of English Sadri. Symbol sdr (international standards) ISO 639-3 language code for Oraon Sadri. See also Wiktionary’s coverage of Oraon Sadri terms Indonesian Noun sdr (text messaging) abbreviation of saudaraWikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads