IPA: //paɪˈniːəˌlɛk.tə.mi//
KK: /paɪˈniːəˌlɛk.tə.mi/
The surgical procedure to remove the pineal gland from the brain.
The doctor explained that a pinealectomy might be necessary for certain medical conditions.
Pinealectomy is formed from "pineal" (from Latin *pinea*, meaning pine cone, referring to the shape of the pineal gland) and "-ectomy" (from Greek *ektomē*, meaning excision or removal). The term refers to the surgical removal of the pineal gland.
Think of the 'pineal' gland shaped like a 'pine cone' and 'ectomy' meaning 'removal' — so pinealectomy means the removal of the pineal gland.