不ふ可か入にゅう性せい

noun

impenetrability

Technical term used in physics and philosophy to describe the property of matter that prevents two objects from occupying the same space at the same time.

• 物ぶっ質しつの不ふ可か入にゅう性せいは、古こ典てん物ぶつ理り学がくの基き本ほん的てきな概がい念ねんの一ひとつである。

  The impenetrability of matter is one of the fundamental concepts of classical physics.