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Show words looked up
Word |
# |
Date |
Definition |
Site |
Level |
| fluorine |
1 |
today |
an extremely reactive chemical element of the halogen group that has nine protons in each nucleus and that occurs naturally only in compounds such as fluoride salts, but that can be isolated in pure form as a yellowish, highly toxic gas. (symbol: F) |
Main |
Adv. |
| hold1 |
1 |
today |
to have or contain within one's hand. [13 definitions] |
Kids |
Ch. |