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A blasting powder or dynamite composed of nitroglycerin, wood fiber, sodium nitrate, and magnesium carbonate.

A drawing paper of large size. See under Paper, n. Atlas powder, a nitroglycerin blasting compound of pasty consistency and great explosive power.

An explosive mixture used in gunnery, blasting, etc.; gunpowder. See Gunpowder. Atlas powder, Baking powder, etc. See under Atlas, Baking, etc. -- Powder down (Zoöl.), the peculiar dust, or exfoliation, of powder-down feathers. -- Powder-down feather (Zoöl.), one of a peculiar kind of modified feathers which sometime…