powder, any mass of fine particles or dust prepared by various mechanical means, e.g., grinding of solid substances, or by chemical means, e.g., precipitation from solutions. In a special sense, the word is applied to powdered propellant explosives, e.g., gunpowder, and to powdered substances that produce a bright light when ignited. See explosive.

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.

More on powder from Fact Monster:

  • bleaching powder - bleaching powder bleaching powder, white or nearly white powder that is usually a mixture of ...
  • smokeless powder - smokeless powder: smokeless powder: see explosive.
  • Terence Vincent Powderly - Powderly, Terence Vincent Powderly, Terence Vincent, 1849–1924, American labor leader, b. ...
  • explosive - explosive explosive, substance that undergoes decomposition or combustion with great rapidity, ...
  • Kids at Work - Kids at Work When you help with household chores after school, you may dust or wash dishes. If you ...

See more Encyclopedia articles on: Chemistry: General

Play Hangman

Play Poptropica

Play Quizzes

Play Tic Tac Toe