non•ste•roi•dalPronunciation: (non"ste-roid'l, -sti-), [key] Pharm.
of or pertaining to a substance that is not a steroid but has certain similar physiological effects.
any such substance, esp. a nonsteroidal anti-inflammatory drug, as ibuprofen.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.