in Algebra, are the numbers or known quantities which are put before letters or quantities, whether known or unknown, and into which they are supposed to be multiplied. Thus, in $3x$, $ax$, or $bx$, $3$, $a$, and $b$ are the co-efficients of $x$; and in $6a$, $9b$, $6$ and $9$ are the co-efficients of $a$ and $b$. See Algebra.

CELOSYRIA, in the larger sense of the word, was the name of the whole country to the southward of Seleucia, and extending as far as Egypt and Arabia; but this word is principally applied to the valley situated between Libanus and Anti-Libanus. This word occurs only in the apocryphal writings of the Old Testament.

CELUS (Heaven), in Pagan Mythology, the son of Æther and Dies, or Air and Day. According to Hesiod, he married Terra or the Earth, on whom he begat Aorea or the Mountains, the Ocean, &c. But having at length imprisoned the Cyclops, who were also his children, his wife, offended at this proceeding, incited her son Saturn to revenge the injury done to his brothers; and by her Coemptio-assistance the latter bound and castrated Cæclus, when the blood which flowed from the wound produced the three furies, the giants, and the wood-nymphs; while the genital parts being thrown into the sea, impregnated the waters, and formed the goddess Venus. This deity was called by the Greeks Uranus.

CEMETERY. See Cemetery.