early 15c., "payment of debt or retribution;" see acquit + -al (2). Sense of "a release from debt or obligation" is from mid-15c.; that of "freeing from charge or offense" (by legal process) is from 1530s.
权威例句
1. The jury voted 8-to-4 in favor of acquittal.
陪审团以8比4的投票结果赞成无罪判决。
2. The case resulted in an acquittal.
此案件最终作出无罪判决。
3. The defence lawyer made an eloquent plea for his client's acquittal.
被告方的律师为委托人的无罪开释作了有说服力的辩护.
4. He was released from prison following his acquittal.