What does "philosopher" mean?

Philosopher: 2. One who reduces the principles of philosophy to practice in the conduct of life; one who lives according to the rules of practical wisdom; one who meets or regards all vicissitudes with calmness.

Additional senses

  1. 2.An alchemist. [Obs.] Chaucer. Philosopher's stone, an imaginary stone which the alchemists formerly sought as instrument of converting the baser metals into gold.

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