a (rare) Belonging to the school of Plate; believeing in Plato's philosophy; sceptical. (defdate|First attested in the late 16th century.)Brown, Lesley, ed. The Shorter Oxford English Dictionary. 5th. Oxford: Oxford University Press, 2003.
a Related to a university or other form of higher education. (defdate|First attested in the late 16th century.)
n (pluralonly) Academic dress, consisting of a cap and gown. (defdate|First attested in the early 19th century.)