pinealectomy pin·e·al·ec·to·my (pĭn’ē-ə-lěk’tə-mē, pī’nē-)
Surgical removal of the pineal body.


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  • Pineal-eye

    noun 1. an eyelike structure that develops from the pineal apparatus in certain cold-blooded vertebrates. noun 1. an outgrowth of the pineal gland that forms an eyelike structure on the top of the head in certain cold-blooded vertebrates pineal eye (pĭn’ē-əl, pī’nē-əl) A sensory structure capable of light reception, appearing as a spot on the […]

  • Pineal-gland

    noun 1. a small, cone-shaped endocrine organ in the posterior forebrain, secreting melatonin and involved in biorhythms and gonadal development. noun 1. a pea-sized organ in the brain, situated beneath the posterior part of the corpus callosum, that secretes melatonin into the bloodstream Technical names epiphysis, epiphysis cerebri pineal gland n. See pineal body. pineal […]

  • Pinealocyte

    pinealocyte pin·e·a·lo·cyte (pĭn’ē-ə-lō-sīt’, pī’nē-, pĭ-nē’-, pī-nē’-) n. A cell of the pineal body having long processes ending in bulbous expansions.

  • Pinealoma

    pinealoma pin·e·a·lo·ma (pĭn’ē-ə-lō’mə, pī’nē-) n. pin·e·a·lo·mas or pin·e·a·lo·ma·ta (-mə-tə) A neoplasm derived from the pineal body and characterized by large, round, or polygonal cells with large nuclei and small cells that resemble lymphocytes.

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