half-life
📖 中文释义
- n. 半衰期, 半排出期
- [化] 半衰期; 半寿期
🔗 释义中的汉语词
🧩 词形变化
复数 half-lives
📘 English Definition(英文释义)
- n the time required for something to fall to half its initial value (in particular, the time for half the atoms in a radioactive substance to disintegrate)