noncyclic

/nɑnˈsaɪklɪk/
adjective
  1. Not happening in a repeated cycle; not occurring in a regular, repeating pattern.
    • The company's noncyclic sales pattern made it hard to predict future revenue.
    • Unlike the seasons, the weather this year has been completely noncyclic.
    • In mathematics, a noncyclic graph has no loops that return to the starting point.