C (Adjective) — Being ten more than ninety.
C (Noun) — Temperature measurement on the Celsius scale (where water freezes at zero degrees and boils at 100 degrees; unit divisions are equal to the kelvin, with zero kelvin being -273.15 C).
C (Noun) — A vitamin found in fresh fruits (especially citrus fruits) and vegetables; prevents scurvy.
C (Noun) — A street name for cocaine.
C (Noun) — (music) the keynote of the scale of C major.
C (Noun) — Ten 10s.
C (Noun) — A base found in DNA and RNA and derived from pyrimidine; pairs with guanine.
C (Noun) — The 3rd letter of the Roman alphabet.
C (Noun) — A unit of electrical charge equal to the amount of charge transferred by a current of 1 ampere in 1 second.
C (Noun) — A general-purpose programing language closely associated with the UNIX operating system.
C (Noun) — One of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose).
C (Noun) — An abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond; occurs in all organic compounds.
C (Noun) — 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.