穿せん通つう

noun, noun or participle which takes 'suru'

penetration; perforation

Technical term used in medicine, engineering, and geology for piercing through a structure or layer. Often appears in compound nouns like 穿通傷 (penetrating wound) or 穿通試験 (penetration test).

• 弾だん丸がんが胸きょう壁へきを穿せん通つうした。

  The bullet penetrated the chest wall.

• この地ち層そうは水みずが穿せん通つうしにくい。

  This stratum is difficult for water to penetrate.