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《1826》 ← Gk deont-, don that which is binding ((pres.p. stem) ← de it behooves one, one ought)+-LOGY🔗🔉

《1826》 ← Gk deont-, don that which is binding ((pres.p. stem) ← de it behooves one, one ought)+-LOGY De・o Op・ti・mo Max・i・mo /do()ptmmksm, do- | dptmmksm, d-/

研究社新英和大辞典 ページ 183769 での(pres.p. stem単語。