tripinnated

/traɪˈpɪneɪtɪd/
adjective
  1. Having leaflets arranged in three levels of division (same as tripinnate).
    • The tripinnated leaves of the yarrow plant are often used in herbal medicine.
    • He sketched the tripinnated pattern of the leaf for his biology class.
    • Many members of the parsley family have tripinnated foliage.
Synonyms