Answer | Crossword Clue |
---|---|
indexes | number (as a ratio) derived from a series of observations and used as an indicator or measure |
plutonium | The chemical element of atomic number 94, a dense silvery radioactive metal of the actinide series, used as a fuel in nuclear reactors and as an explosive in nuclear fission weapons. Plutonium only occurs in trace amounts in nature but is manufactured in nuclear reactors from uranium-238 |