PERMANENT a.
oys form or character; remaining unaltered or unremoved; abiding; durable; fixed; stable; lasting; as, a permanent impression. Eternity stands permanent and fixed. Dryden. Permanent gases (Chem. & Physics), hydrogen, oxygen, nitrogen, and carbon monoxide; -- also called incondensible or incoercible gases, before their…
POWDER n.
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…