pinnation

/pɪˈneɪʃən/
noun
  1. The arrangement of parts (like leaflets or feathers) on opposite sides of a central stem or axis, resembling a feather.
    • The pinnation of the fern's fronds makes it look delicate and symmetrical.
    • Botanists study the pinnation of leaves to identify different plant species.
    • The bird's wing shows a clear pinnation of its primary feathers.
Synonyms
Antonyms
What does "pinnation" mean? | whatsthatwordmean | whatsthatwordmean