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practical reason

noun
  1. (in Kantian ethics) reason applied to the problem of action and choice, especially in ethical matters.
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Origin of practical reason

First recorded in 1895–1900
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for practical reason

practical reason

practical reasoning

noun philosophy logic
  1. the faculty by which human beings determine how to act
  2. reasoning concerning the relative merits of actions
  3. the principles governing arguments which issue in actions or intentions to act
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012