What is the root word for the term pericardiectomy?

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PERI/O

To find the root word for the term "pericardiectomy," we can break down the word into its component parts.

"Pericardiectomy" is made up of three parts: "peri-," "cardio-," and "-ectomy."

1. "Peri-" is a prefix that means "around" or "surrounding."
2. "Cardio-" is a combining form that relates to the heart.
3. "-ectomy" is a suffix that means "removal" or "excision."

Therefore, the root word for "pericardiectomy" is "cardio," which refers to the heart.