indication (n.)youdaoicibaDictYouDict[indication 词源字典]
early 15c., from Latin indicationem (nominative indicatio) "an indicating; valuation," noun of action from past participle stem of indicare "point out, show," from in- "into, in, on, upon" (see in- (2)) + dicare "proclaim," from stem of dicere "to speak, to say" (see diction).[indication etymology, indication origin, 英语词源]