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Word Parts (Prefixes, Suffixes, Roots)

Why This Matters for Nursing: Medical terminology is built from Greek and Latin roots. Understanding word parts helps you decode unfamiliar terms without a dictionary — essential when reading charts, orders, and research.

What You Need to Know

Words may contain one or more of these parts:

  • Prefix: Beginning (changes meaning)
  • Root: Core meaning
  • Suffix: Ending (often changes part of speech)

Example: un-help-ful

  • un- (prefix) = not
  • help (root) = assist
  • -ful (suffix) = full of
Word Dissection Diagram cardi/o COMBINING FORM my/o COMBINING FORM -pathy SUFFIX + + heart muscle disease cardiomyopathy = disease of the heart muscle

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