explanation

/ˌɛkspləˈneɪʃən/
noun
  1. A statement or set of statements that makes something clear or understandable.
    • Her explanation of the rules helped everyone play the game correctly.
    • The teacher gave a clear explanation of the math problem.
    • I need an explanation for why the meeting was canceled.
  2. A reason or justification for an action or event.
    • He offered no explanation for his sudden departure.
    • There is a simple explanation for the noise: the wind blew the door shut.
    • The company issued an explanation for the delay in shipping.