7 syllables: Phe, o, chro, mo, cyt, o, ma. Stress on cyt.
fee-oh-kroh-moh-SEYE-toh-muh
/fiː oʊ kroʊ mo ˈsaɪt oʊ mə/
Pheochromocytoma is pronounced fee-oh-kroh-moh-SEYE-toh-muh (/fiː oʊ kroʊ mo ˈsaɪt oʊ mə/). It has seven syllables (Phe-o-chro-mo-cyt-o-ma), with the stress on "cyt". A pheochromocytoma is a rare adrenal gland tumor that secretes catecholamines, causing episodes of high blood pressure, palpitations, and headaches. It typically presents with headaches, sweating, and anxiety and requires surgical removal and hormonal management. The term combines Greek roots referring to a grayish, brownish color change and a cellular tumor surrounding the adrenal glands.
nounA pheochromocytoma is a rare adrenal gland tumor that secretes catecholamines, causing episodes of high blood pressure, palpitations, and headaches. It typically presents with headaches, sweating, and anxiety and requires surgical removal and hormonal management. The term combines Greek roots referring to a grayish, brownish color change and a cellular tumor surrounding the adrenal glands.
How to Pronounce Pheochromocytoma
"The patient underwent imaging that revealed a pheochromocytoma in the adrenal medulla."
"Endocrinologists consider pheochromocytoma in the differential diagnosis of resistant hypertension."
" Surgical resection confirmed the diagnosis of pheochromocytoma."
Say phe-o-chro-mo-cy-tom-a as four main parts: /fəˌɒɪkroʊˌmoʊsɪˈtoʊmə/. The primary stress is on the 'to' syllable before the final -ma, with secondary stress on the 'kro' portion. Start with a gentle, schwa-like /fə/, then /ˌɒɪ/ as a diphthong, then /kroʊ/ and /ˌmoʊ/ leading into /ˈtoʊmə/. Keep the vowel quality bright in the second syllable to avoid slurring. Audio reference: consult medical pronunciation videos for this term.
Two frequent errors: 1) Flattening the /ɒɪ/ into a flat /ɒ/ or /aɪ/, which blunts the second syllable; 2) Misplacing stress, often stressing the wrong syllable like /ˌmoʊˈsɪtoʊmə/. Correction: keep /ˌɒɪ/ as a distinct diphthong and place primary stress on the /to/ syllable: /fəˌɒɪkroʊˌmoʊsɪˈtoʊmə/.
In US English you’ll hear /fəˌɪkroʊˌmoʊsɪˈtoʊmə/, with a less rounded /oʊ/ in -mo- segments and rhotic /r/. UK English often features a slightly longer /ɒ/ and non-rhoticity, giving /fəˌɒɪkroʊˌmɒsɪˈtəʊmə/. Australian tends to be rhotic but with broader vowels: /fəˌɔɪkroʊˌmæsɪˈtəʊmə/. Core consonants remain, but vowel quality shifts and rhoticity influence the middle vowels.
It combines multiple syllables with a long, three-consonant cluster (phe-o-chro-mo-cy-to-ma) and a prevalent diphthong sequence (/ɒɪ/ and /oʊ/). Also, the -chromo- vs -cr- segments can blur for non-specialists, and the final -oma is stressed in medical speech. Practice the sequence slowly, then blend to natural speed while keeping accurate diphthongs and clear syllable boundaries.
There are no silent letters in standard medical pronunciation of pheochromocytoma. Every syllable carries a syllabic vowel, and the sequence depends on clear vowel sounds: /fəˌɒɪkroʊˌmoʊsɪˈtoʊmə/. Be mindful not to drop the /s/ of -soma or merge adjacent vowels, which is a common casual misstep.
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Pheochromocytoma originates from the Greek phaios (dusky, gray), khrōma (color, tint), and kytos (cell), with -oma denoting a tumor. The term was coined in the late 19th to early 20th century as pathologists observed chromaffin cells’ dark appearance in stained adrenal tissue and recognized a tumor arising from those neuroendocrine cells. The word reflects both the pigmented, dark coloration noted in early histology (pheochromo- literally “dusky color cell”) and the tumor’s adrenal origin. First use in medical literature traces to descriptions of chromaffin tumors affecting catecholamine secretion; as understanding of the adrenal medulla’s physiology evolved, the name persisted despite modern refinements in classification to pheochromocytoma and related paragangliomas.
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💡 These words have similar meanings to "Pheochromocytoma" and can often be used interchangeably.
🔄 These words have opposite meanings to "Pheochromocytoma" and show contrast in usage.
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Words that rhyme with "Pheochromocytoma"
-oma sounds
Practice with these rhyming pairs to improve your pronunciation consistency:
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