デマケMeanings1noundemarcationabbreviationAbbreviation of デマケーション, used in contexts like boundary setting or line drawing. Often appears in business or technical discussions.See also: デマケーションプロジェクトの範はん囲いを明めい確かくにするためにデマケが必ひつ要ようだ。We need a demarcation to clarify the scope of the project.