noun

• (originally) A lover of wisdom.
• A student of philosophy.
• A scholar or expert engaged in or contributing to philosophical inquiry.
• (archaic) A person who applies the principles of philosophy to the conduct of their life, as by acting calmly and rationally in the face of inevitable change.
• (archaic) A student, scholar, or expert in any branch of knowledge, especially those branches studied prior to being considered part of pure science.
• (obsolete) An alchemist.