How to Pronounce Plethysmography

Plethysmography is pronounced pleth-iz-MOG-rah-fee. The stress falls on the third syllable (MOG), which you say a bit louder and longer than the others. A helpful way to remember it is to think of the word "photograph" at the end—the "graph" part sounds like "graf," and "graphy" sounds like "rah-fee."

The stressed syllable is the third one: MOG. This means you say it a bit louder and with more emphasis than the other parts. A common mistake is stressing the first syllable (PLETH) or the second syllable (iz), but the emphasis really belongs on MOG.

Plethysmography breaks into six syllables: pleth-iz-MOG-rah-fee. Try saying each syllable separately first, then speed them up together.

Plethysmography is a test that measures tiny changes in the size of body parts or organs to check how well blood is flowing. Think of it like using a special sensor to watch something swell and shrink with each heartbeat to see if blood is moving the way it should.

Plethysmography comes from ancient Greek. "Plethysmo" comes from "plethysmos," meaning swelling or fullness, and "graphy" comes from "graphia," meaning to write or record. So the word literally means "recording swelling or volume changes."

Other words with "graphy" at the end include radiography (writing with X-rays) and echocardiography (writing with sound waves of the heart). The "pleth" root appears in plethysmograph, which is the actual machine or device used to perform the test.

Many people accidentally say pleth-is-MOG-rah-fee (with an "is" sound instead of "iz") or stress the wrong syllable, like PLETH-iz-mog-rah-fee. Remember: it's pleth-iz-MOG-rah-fee, with the stress on that third syllable MOG.

Here's an example: "The doctor ordered a plethysmography test to check the blood flow in the patient's legs." This sentence shows how you'd use the word when talking about the type of test being performed.