NEOPLASIA Meaning of NEOPLASIA in English [ ˌni:ə(ʊ)'pleɪzɪə ]■ noun Medicine the presence or formation of new, abnormal growth of tissue.OriginC19: from neo- + Gk plasis 'formation'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004