POWDER (W3C) , a W3C Working Group that is specifying a protocol for publishing descriptions of (e.g. metadata about) Web resources using RDF, OWL, and HTTP.
Several powdery substances are known colloquially as "powder":
Powdered Milk , a milk powder made from dried milk solids
Cosmetic powders such as Face Powder and body or talcum powders
Gunpowder , the explosive powder used as a propellant