n A senior member of an academy, college, or university; a person who attends an academy; a person engaged in scholarly pursuits; one who is academic in practice. (defdate|First attested in the late 16th century.)
n A member of the Academy; an academician. (defdate|First attested in the mid 18th century.)
a Belonging to the school or philosophy of Plato; as, the 'academic' sect or philosophy. (defdate|First attested in the late 16th century.)
a Belonging to an academy or other higher institution of learning; also a scholarly society or organization. (defdate|First attested in the late 16th century.)
a So scholarly as to be unaware of the outside world; lacking in worldliness.
a Subscribing to the architectural standards of (w|Vitruvius).
n (usually|capitalized) A follower of Plato, a Platonist. (defdate|First attested in the mid 16th century.)Brown, Lesley, ed. The Shorter Oxford English Dictionary. 5th. Oxford: Oxford University Press, 2003.
n (pluralonly) Academic dress; academicals. (defdate|First attested in the early 19th century.)
n (pluralonly) Academic studies. (defdate|First attested in the late 20th century.)