INSPISSATE Meaning of INSPISSATE in English [ ɪn'spɪseɪt ]■ verb [usu. as adjective ~d ] thicken or congeal.Derivativesinspissation nouninspissator noun OriginC17: from late L. inspissat- , inspissare 'thicken'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004