What is the meaning of academic?

noun

• An educator who works at a college or university.
  • synonyms: academician, faculty member

adjective

• Associated with academia or an academy.
  • usage: "the academic curriculum"; "academic gowns"
• Hypothetical or theoretical and not expected to produce an immediate or practical result.
  • usage: "an academic discussion"; "an academic question"
• Marked by a narrow focus on or display of learning especially its trivial aspects.
  • synonyms: donnish, pedantic