protoxin التعريفات والمعاني == English == === Etymology === From pro- + toxin. === Noun === protoxin (plural protoxins) A rudimentary toxin ==== Synonyms ==== preprotoxin شارك هذه المقالة: Facebook Twitter WhatsApp LinkedIn كلمات ذات صلة protoxins proton protein protogen Proto-Indo-European protoni pronominal protona protonic