PROSENCEPHALON Meaning of PROSENCEPHALON in English [ ˌprɒsɛn'sɛfəlɒn , -'kɛf- ]■ noun another term for forebrain .OriginC19: from Gk prosō 'forwards' + encephalon . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004