デカログMeanings1nounDecalogue; Ten Commandmentsrare termChristianityRare Christian term for the Ten Commandments; the more common Japanese term is 十戒 (じっかい).See also: 十戒キリスト教きょうの文ぶん脈みゃくでは、十じっ戒かいのことをデカログと呼よぶことがある。In Christian contexts, the Ten Commandments are sometimes called the Decalogue.