- explanation (n.)
[explanation 词源字典]
- late 14c., from Latin explanationem (nominative explanatio) "an explanation, interpretation," noun of action from past participle stem of explanare "to make plain or clear, explain," literally "make level, flatten," from ex- "out" (see ex-) + planus "flat" (see plane (n.1)).[explanation etymology, explanation origin, 英语词源]