1. potassium-argon_dating

noun. geological dating that relies on the proportions of radioactive potassium in a rock sample and its decay product, argon.

Rhymes with Penicillin V Potassium

2. penicillin-resistant_bacteria

noun. bacteria that are unaffected by penicillin.

3. penicillin

noun. ['ˌpɛnəˈsɪlən'] any of various antibiotics obtained from Penicillium molds (or produced synthetically) and used in the treatment of various infections and diseases.

4. potassium

noun. ['pəˈtæsiːəm'] a light soft silver-white metallic element of the alkali metal group; oxidizes rapidly in air and reacts violently with water; is abundant in nature in combined forms occurring in sea water and in carnallite and kainite and sylvite.

5. V

noun. a unit of potential equal to the potential difference between two points on a conductor carrying a current of 1 ampere when the power dissipated between the two points is 1 watt; equivalent to the potential difference across a resistance of 1 ohm when 1 ampere of current flows through it.

6. V

noun. the cardinal number that is the sum of four and one.

7. v

adjective. ['ˈviː'] being one more than four.

8. V

noun. a soft silvery white toxic metallic element used in steel alloys; it occurs in several complex minerals including carnotite and vanadinite.

9. V

noun. the 22nd letter of the Roman alphabet.

10. v

noun. ['ˈviː'] the 22nd letter of the Roman alphabet.