CORUS, OMER, HOMER, or CHOMER, in Jewish Antiquities, a measure containing 10 baths, or 75 gallons and 5 pints, as a measure of liquids; and 32 pecks and 1 pint as a dry measure. The corus or omer was most commonly employed as a dry measure, and was the largest in use among the Jews. It contained, according to the rabbins, 10 ephahs or 30 sata or seahs. Corus is the most usual term in the historical writers, and omer or chomer among the prophets.

Corus is used by some of our old writers for 8 bushels, or a quarter; thus, decem coros tritici, sic decem quartaria.

CORUSCATION, a glittering or sudden gleam of light, as that produced by electricity in the higher regions of the atmosphere during night, or by the aurora borealis. It is also applied to any vivid glittering light, whether natural or artificial.

CORVETTE, a sloop of war; an advice-boat with fewer than twenty guns.