COAL n.
be used for fuel, and consisting, like charcoal, mainly of carbon, but more compact, and often affording, when heated, a large amount of volatile matter.
COAT n.
a garment of light material worn over the armor in the 15th and 16th centuries. This was often charged with the heraldic bearings of the wearer. Hence, an heraldic achievement; the bearings of any person, taken together. -- Coat card, a card bearing a coated figure; the king, queen, or knave of playing cards. "`I am…
COLUMNAR a.
gular columns, usually six-sided, but sometimes with eight or more sides. The columns are often fractured transversely, with a cup joint, showing a concave surface above. This structure is characteristic of certain igneous rocks, as basalt, and is due to contraction in cooling.
CONDENSATION n.
stances into a distinct and definite compound of greater complexity and molecular weight, often resulting in an increase of density, as the condensation of oxygen into ozone, or of acetone into mesitylene. Condensation product (Chem.), a substance obtained by the polymerization of one substance, or by the union of two…