[ 'naʊmənɒn , 'naʊmənɒn ]
■ noun ( plural noumena ) (in Kantian philosophy) a thing as it is in itself, as distinct from a thing as it is knowable by the senses through phenomenal attributes.
Derivatives
noumenal adjective
Origin
C18: via Ger. from Gk, lit. '(something) conceived'.