出典:Wiktionary
出典:『Wiktionary』 (2012/11/15 08:35 UTC 版)
From Middle English, from Latin extra (“outside; beyond”) + Middle English, from Medieval Latin dura mater (“the hard exterior portion of the spinal column”, literally “hard mother”) + from Latin abscessus (“a going away; gathering of humors, abscess”), from abscēdō (“go away, depart”), from abs (“away from”) + cēdō (“go”).