Pronunciation: (mō'mun-ter"ē), [key]
1. lasting but a moment; very brief; fleeting: a momentary glimpse.
2. that might occur at any moment; ever impending: to live in fear of momentary annihilation.
3. effective or recurring at every moment; constant.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.