tephrology التعريفات والمعاني == English == === Noun === tephrology (uncountable) The scientific study of tephra. ==== Related terms ==== tephrological tephrochronometry tephrostratigraphy شارك هذه المقالة: Facebook Twitter WhatsApp LinkedIn كلمات ذات صلة technology tephrological technology tree technology transfer technology stack technology-wise technologyless technology education typhlology