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corvette a small, swift, lightly armed ship, used esp. as an escort. [2 definitions]
corvine of, like, or pertaining to crows, ravens, or jays.
cory the smaller monetary unit of Guinea. (Cf. syli.)
corymb a flat-topped cluster of flowers in which the flower stalks grow upwards from various points of the main stem and become level with each other.
coryza a head cold.
Cos. abbreviation of "Companies," a plural form of "Company" (used in a proper name).
coscript combined form of script.
cosecant in trigonometry, the secant of the complement or the reciprocal of the sine of a given angle or arc.
cosign to sign together with another or others. [2 definitions]
cosignatory affixing one's signature on a document together with one or more other persons. [2 definitions]
cosine in trigonometry, the ratio between the length of the side next to one of the acute angles in a right triangle and the length of the hypotenuse.
cosmetic any preparation, such as lipstick, made to be applied externally to the body to increase attractiveness. [4 definitions]
cosmetology the study of cosmetics or the profession of applying them.
cosmic of or relating to the universe or cosmos. [3 definitions]
cosmic dust very fine particles of matter found in interplanetary space.
cosmic noise interference from radio waves beyond the earth; galactic noise.
cosmic rays streams of high-energy charged atomic nuclei or other particles that enter the earth's atmosphere from outer space.
cosmo- world; universe.
cosmochemistry the science concerned with the distribution of chemical substances in the universe.
cosmogony the study or a theory of the beginnings, structure, and evolution of the universe.
cosmography the science, or a particular description, of the physical arrangement of the universe and the earth.