Proto-Nilo-SaharanWiktionary 原文英美构词拆解proto-前缀+Nilo-Saharan词干proto-An early, primitive stage of development. · Original, older.词源说明From proto- + Nilo-Saharan.释义专有名词proper noun1(linguistics) The theoretical protolanguage which is the common ancestor of the Nilo-Saharan languages.