Look-up History
Your look-up history is saved temporarily in the session. Please log in to saved it in your own account, and subscribe for unlimited saving.
Show words looked up
Word |
# |
Date |
Definition |
Site |
Level |
uranium |
1 |
today |
a radioactive chemical element that has ninety-two protons in each nucleus and that occurs in pure form as a heavy silvery-white metal, used as a fissionable nuclear fuel. (symbol: U) |
Main |
Adv. |