nonas

/ˈnoʊnəs/
noun
  1. A prefix meaning 'nine' or a group of nine, used in scientific or technical terms (e.g., nonasaccharide).
    • In geometry, a nonagon is a polygon with nine sides, sometimes called a nonas.
    • The term 'nonas' appears in the names of certain chemical compounds.
    • The chemist studied a nonasaccharide, a sugar molecule made of nine units.