pectinations

/ˌpɛktɪˈneɪʃənz/
noun
  1. Multiple instances or examples of comb-like structures or arrangements.
    • Under the microscope, the pectinations of the algae looked like tiny brushes.
    • The pectinations on the different species of moths vary in size and spacing.
    • The artist drew the pectinations of the coral in great detail for the biology textbook.