CARBONIC a.
ommon marble and chalk. Plants imbibe it for their nutrition and growth, the carbon being retained and the oxygen given out. -- Carbonic oxide (Chem.), a colorless gas, CO, of a light odor, called more correctly carbon monoxide. It is almost the only definitely known compound in which carbon seems to be divalent. It i…
COGNIZANCE n.
The distinguishing mark worn by an armed knight, usually upon the helmet, and by his retainers and followers: Hence, in general, a badge worn by a retainer or dependent, to indicate the person or party to which he belonged; a token by which a thing may be known. Wearing the liveries and cognizance of their master. Pres…