Definition of piniform in English:

piniform

adjective

Anatomy
rare
  • Having the shape of a pine cone; especially in "piniform decussation"noun the superior pyramidal decussation, a roughly conical area of the anterior medulla oblongata between the olivary nuclei.

Origin

Late 19th century; earliest use found in John S. Billings (1838–1913). From classical Latin pīnus pine + -iform, perhaps after scientific Latin piniformis.

Pronunciation

piniform

/ˈpʌɪnɪfɔːm/