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Meaning of pheochromocytoma

phe•o•chro•mo•cy•to•ma

Pronunciation: (fē"ō-krō"mō-sī-tō'mu), [key]
— pl. -mas, -ma•ta
  1. a tumor of the sympathetic nervous system or adrenal medulla, that produces excess norepinephrine and epinephrine and causes hypertension, headaches, nausea, etc.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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