rational

rational definition - medical

ra·tion·al (răshˈə-nəl)

adjective
  1. Having or exercising the ability to reason.
  2. Influenced by reasoning rather than by emotion.
  3. Of sound mind; sane.
  4. Based on scientific knowledge or theory rather than practical observation.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Comments
Improve this definition.
Do you have more to add? Share your linguistic knowledge or observation.
/Register to save your comments.