capitation (n.)youdaoicibaDictYouDict[capitation 词源字典]
1610s, "counting of heads," from Late Latin capitationem (nominative capitatio), noun of action from past participle stem of a verb derived from caput "head" (see capitulum). Meaning "levying of a poll tax" is from 1640s.[capitation etymology, capitation origin, 英语词源]