释义 |
WordReference Random House Unabridged Dictionary of American English © 2024re•ac•tiv•i•ty (rē′ak tiv′i tē),USA pronunciation n. - Chemistrythe quality or condition of being reactive.
- Chemistrythe relative capacity of an atom, molecule, or radical to undergo a chemical reaction with another atom, molecule, or compound.
- Chemistry, Physics[Physics.]a measure of the deviation from the condition at which a nuclear reactor is critical.
- Immunologythe ability of an antigen to combine with an antibody.
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