Pronunciation: (vē'lum), [key]
—pl. -laPronunciation: (-lu), [key] for 1, 2, -lum for 3.
1. Biol.any of various veillike or curtainlike membranous partitions.
2. Anat.the soft palate. See under palate (def. 1).
3. Meteorol.a thin cloud, large in horizontal area, that is draped over or penetrated by cumuliform clouds.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.