Pronunciation: (stō'u-siz"um), [key]
1. a systematic philosophy, dating from around 300 b.c.,that held the principles of logical thought to reflect a cosmic reason instantiated in nature.
2. (l.c.) conduct conforming to the precepts of the Stoics, as repression of emotion and indifference to pleasure or pain.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.