Cite
 

Meaning of rigorous

rig•or•ous

Pronunciation: (rig'ur-us), [key]
— adj.
  1. characterized by rigor; rigidly severe or harsh, as people, rules, or discipline: rigorous laws.
  2. severely exact or accurate; precise: rigorous research.
  3. (of weather or climate) uncomfortably severe or harsh; extremely inclement.
  4. logically valid.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also: