"Eunectes murinus" shine sunan kimiyya ga koren anaconda, wanda babban maciji ne mara dafin da ake samu a Kudancin Amirka. Kalmar "Eunectes" ta fito ne daga kalmar Helenanci "eu" ma'ana "mai kyau" da "nektos" ma'ana "mai iyo," yayin da "murinus" ya samo asali ne daga kalmar Latin don " linzamin kwamfuta . Don haka, sunan Eunectes murinus kusan yana fassara zuwa "mai ninkaya mai kyau na beraye."