COMET n.
A member of the solar system which usually moves in an elongated orbit, approaching very near to the sun in its perihelion, and receding to a very great distance from it at its aphelion. A comet commonly consists of three parts: the nucleus, the envelope, or coma, and the tail; but one or more of these parts is frequen…
COMMONS n.
pasture ground. To shake his ears, and graze in commons. Shak. Doctors' Commons, a place near St. Paul's Chuchyard in London where the doctors of civil law used to common together, and where were the ecclesiastical and admiralty courts and offices having jurisdiction of marriage licenses, divorces, registration of wil…
COMPRESSION PROJECTILE n.
ucted so as to take the grooves of a rifle by means of a soft copper band firmly attached near its base or, formerly, by means of an envelope of soft metal. In small arms the modern projectile, having a soft core and harder jacket, is subjected to compression throughout the entire cylindrical part.