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pheo- or phaeo-
Dusky, gray, or dun: pheochrome.


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  • Pheochrome

    pheochrome phe·o·chrome (fē’ə-krōm’) adj. Staining darkly with chromic salts.

  • Pheochromocyte

    pheochromocyte phe·o·chro·mo·cyte (fē’ō-krō’mə-sīt’) n. A chromaffin cell of a sympathetic paraganglion, of a pheochromocytoma, or of the medulla of an adrenal gland.

  • Pheochromocytoma

    [fee-oh-kroh-moh-sahy-toh-muh] /ˌfi oʊˌkroʊ moʊ saɪˈtoʊ mə/ noun, plural pheochromocytomas, pheochromocytomata [fee-oh-kroh-moh-sahy-toh-muh-tuh] /ˌfi oʊˌkroʊ moʊ saɪˈtoʊ mə tə/ (Show IPA). Pathology. 1. a tumor of the sympathetic nervous system or adrenal medulla, that produces excess norepinephrine and epinephrine and causes hypertension, headaches, nausea, etc. pheochromocytoma phe·o·chro·mo·cy·to·ma (fē’ō-krō’mō-sī-tō’mə) n. pl. phe·o·chro·mo·cy·to·mas or phe·o·chro·mo·cy·to·ma·ta (-mə-tə) A usually benign […]

  • Pheon

    [fee-on] /ˈfi ɒn/ noun, Heraldry. 1. a charge representing an arrowhead with widely spread barbs.

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