FILTER n.
harcoal, through which water or other liquid may passed to cleanse it from the solid or impure matter held in suspension; a chamber or device containing such substance; a strainer; also, a similar device for purifying air. Filter bed, a pond, the bottom of which is a filter composed of sand gravel. -- Filter gallery,…
GOLD n.
Figuratively, something precious or pure; as, hearts of gold. Shak. Age of gold. See Golden age, under Golden. -- Dutch gold, Fool's gold, Gold dust, etc. See under Dutch, Dust, etc. -- Gold amalgam, a mineral, found in Columbia and California, composed of gold and mercury. -- Gold beater, one whose occupation is to…
GRAM; GRAMME n.
ctly, and is very nearly, equivalent to the weight in a vacuum of one cubic centimeter of pure water at its maximum density. It is equal to 15.432 grains. See Grain, n., 4. Gram degree, or Gramme degree (Physics), a unit of heat, being the amount of heat necessary to raise the temperature of one gram of pure water one…