| 词汇 | r.o.t.c. |
| 词源 | R.O.T.C.also ROTC, 1916, American English, initialism (acronym) for Reserve Officers' Training Corps, established as part of the National Defense Act of 1916. updated on July 23, 2012 |
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英语词源词典收录了45867条英语词源词条，基本涵盖了全部常用英语词汇的起源、历史，是研究英语词汇或通过词源学英语的必备工具。