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Medical Terminology  /  MedTerm 0170  ·  Procedure · 60–90 seconds

Prefix Pairs That Reverse a Finding

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Six prefix pairs reverse the meaning of a term while changing one or two letters, and each pair attaches to the same roots.

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Six reversals, each shown on a shared root.

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Five of these pairs are true opposites. The sixth is a sound-alike, and treating it as an opposite is its own error.