| 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 or nail polish, 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 ray |
high energy radiation, consisting primarily of high-energy protons and alpha particles, that primarily originates from outside the solar system. Upon collision with earth's atmosphere, secondary particles can be produced that sometimes reach the earth's surface. |
| 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. |
| cosmology |
the branch of philosophy concerned with the nature, origin, and development of the universe. [2 definitions] |
| cosmonaut |
a space traveler or astronaut, esp. one from Russia. |
| cosmopolitan |
of, drawn from, or common to all the world or all the peoples of the world. [3 definitions] |
| cosmopolite |
a cosmopolitan. |
| cosmos |
the totality of material existence, esp. considered as a unified, orderly whole; universe. [4 definitions] |
| cosplay |
the activity of wearing clothes, makeup, and accessories associated with a particular character in a movie, comic book, or the like. In addition, cosplay involves roleplay along with others who are engaging in cosplay. Cosplay developed in Japan and is practiced by fans of Japanese anime both in Japan and in other countries. |
| cosponsor |
one who jointly sponsors an event, legislation, presentation, or the like. [2 definitions] |