etymon
英 [ˈetɪmɒn]
美 [ˈetɪmɑːn]
n. 词源; 词的原形; 字的原形
牛津词典
noun
- 词源；词的原形；字的原形
a word or part of a word from which another word comes
英英释义
noun
- a simple form inferred as the common basis from which related words in several languages can be derived by linguistic processes