Meaning of vanadium pentoxide

vana'dium pentox'ide

Pronunciation: [key]
— Chem. Chem.
  1. a yellow to red crystalline compound, VO, slightly soluble in water, used as a catalyst for organic reactions, in glass to absorb ultraviolet radiation, and as a photographic developer.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.