pheochromocytoma

-oma

(pathology) Forming nouns indicating disease or morbidity. · (pathology, specifically) Forming nouns indicating tumors or masses, which may be non-neoplastic or (more often) neoplastic, and (if the latter) either benign or malignant (cancerous); in accord with present-day understanding of histopathology, the suffix is now nonproductive for non-neoplastic senses.

也可拆解为

pheo-

Grey in colour.

-chrome

having a specified colour