pheochromocytoma

[ fee-oh-kroh-moh-sahy-toh-muh ]
/ ˌfi oʊˌkroʊ moʊ saɪˈtoʊ mə /

noun, plural phe·o·chro·mo·cy·to·mas, phe·o·chro·mo·cy·to·ma·ta [fee-oh-kroh-moh-sahy-toh-muh-tuh]. /ˌfi oʊˌkroʊ moʊ saɪˈtoʊ mə tə/. Pathology.

a tumor of the sympathetic nervous system or adrenal medulla, that produces excess norepinephrine and epinephrine and causes hypertension, headaches, nausea, etc.

QUIZZES

BEAT THE DOLDRUMS WITH THIS WORD OF THE DAY QUIZ!

We know you’ll tackle this quiz totis viribus! See how many words from the week of Oct 12–18, 2020 you get right!
Question 1 of 7
What does “Indigenous” mean?

Origin of pheochromocytoma

1925–30; pheochromocyte a chromaffin cell of the adrenal medulla (pheochrome chromaffin (<Greek phai(ós) dusky + -o- + -chrome) + -o- + -cyte) + -oma; compare German Phäochromocytom (1912)

Words nearby pheochromocytoma

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Medical definitions for pheochromocytoma

pheochromocytoma
[ fē′ō-krō′mō-sī-tōmə ]

n. pl. phe•o•chro•mo•cy•to•mas

A usually benign tumor of the adrenal medulla or the sympathetic nervous system in which the affected cells secrete increased amounts of epinephrine or norepinephrine.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.