Noun

1. A soft silver-white ductile metallic element (liquid at normal temperatures); the most electropositive and alkaline metal
2. A degree on the centigrade scale of temperature
3. 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
4. A vitamin found in fresh fruits (especially citrus fruits) and vegetables; prevents scurvy
5. One of the four nucleotides used in building dna; all four nucleotides have a common phosphate group and a sugar (ribose)
6. A base found in dna and rna and derived from pyrimidine; pairs with guanine
7. An abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond; occurs in all organic compounds
8. Ten 10s
9. A unit of electrical charge equal to the amount of charge transferred by a current of 1 ampere in 1 second
10. A general-purpose programing language closely associated with the unix operating system
11. (music) the keynote of the scale of c major
12. The 3rd letter of the roman alphabet
13. Street names for cocaine