D defs.my
Entry 2 senses Webster, 1913

Obtusion

· Ob·tu·sion · IPA
01 n. The act or process of making obtuse or blunt.
  1. 1.
    The act or process of making obtuse or blunt.
  2. 2.
    The state of being dulled or blunted; as, the obtusion of the senses.