WordNet (r) 3.0 (2006):

academia
    n 1: the academic world [syn: academia, academe]

Moby Thesaurus II by Grady Ward, 1.0:

24 Moby Thesaurus words for "academia":
   academe, alma mater, college, college of engineering,
   community college, degree-granting institution, four-year college,
   graduate school, institute of technology, ivied halls,
   journalism school, junior college, law school, medical school,
   multiversity, normal, normal school, postgraduate school,
   school of communications, school of education, two-year college,
   university, university college, varsity