接せっ触しょく線せん

noun

line of contact; no man's land

Technical term used in military contexts for the front line where opposing forces meet, or in geometry for the line along which two surfaces touch. The 'no man's land' gloss refers to the contested area between fronts.

• 両りょう軍ぐんの接せっ触しょく線せんでは散さん発ぱつ的てきな銃じゅう撃げきが続つづいている。

  Sporadic gunfire continues along the line of contact between the two armies.

• 幾き何か学がくで、二ふたつの曲きょく面めんの接せっ触しょく線せんを求もとめる。

  In geometry, find the line of contact between the two curved surfaces.