c

a degree on the centigrade scale of temperature
the speed at which light travels in a vacuum; the constancy and universality of the speed of light is recognized by defining it to be exactly 299,792,458 meters per second
a vitamin found in fresh fruits (especially citrus fruits) and vegetables; prevents scurvy
one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose)
a base found in DNA and RNA and derived from pyrimidine; pairs with guanine
an abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond; occurs in all organic compounds
ten 10s
a unit of electrical charge equal to the amount of charge transferred by a current of 1 ampere in 1 second
a general-purpose programing language closely associated with the UNIX operating system
(music) the keynote of the scale of C major
the 3rd letter of the Roman alphabet
street names for cocaine
being ten more than ninety

c is not a valid Scrabble word