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Medical Terminology  /  MedTerm 0013  ·  Atom · ~20 seconds

Rule: Prefixes Join Without a Combining Vowel

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A prefix attaches directly to the rest of the term, with no combining vowel between them.

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Peri plus cardi slash o plus itis gives pericarditis.

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Some prefixes drop their own final vowel before a vowel, as endo becomes end in endarterectomy.