Certified Paraoptometric (CPO) Practice Exam 2025

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What does the suffix -oma signify in medical terms?

Inflammation
Measuring unit
Tumor or swelling
Abnormal condition

The correct answer is: Tumor or swelling

The suffix -oma is commonly used in medical terminology to indicate a tumor or a swelling. This suffix is derived from the Greek word "oma," which translates to "swelling" or "mass." It is often appended to the root of a word that denotes the type of tissue or organ being affected. For example, "carcinoma" refers to a cancerous tumor in epithelial tissue, while "lipoma" refers to a tumor composed of fatty tissue. Thus, identifying the suffix -oma is crucial for understanding various medical conditions related to tumors.