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Medical TERMINOLOGY

Medical terminology is composed of a prefix, root word, and suffix:
Prefix: A prefix is placed at the beginning of a word to modify or change its meaning. Pre means "before." Prefixes may also indicate a location, number, or time.
Root: central part of a word.
Suffix: The ending part of a word that modifies the meaning of the word.
Additional resources:   [Intro to med terms] [Med terms rules] [Med term reference] [Word building reference]  [Practice Exams]

Alphabetical Listing of Med Terms

a b c d e f g h i j k l m
n o p q r s t u v w x y z

Med terms ‘I’- medical prefix/suffix

This section deals with all med terms beginning with a letter 'I', and features a medical prefix, medical term root and suffix for each.

-ia   condition
-iac   pertaining to
-iasis   abnormal condition
iatr/o   physician; treatment
-ic   pertaining to
-ical   pertaining to
ichthy/o   dry; scaly
-ician   specialist
-icle   small
ide/o   idea, mental images
idi/o   unknown; individual; distinct
ile/o   ileum
ili/o   ilium
immun/o   immune; protection; safe
in-   in; into; not
-in   a substance, chemical, chemical compound
-ine   a substance, chemical, chemical compound
-ine   pertaining to
infra-   below; inferior to; beneath
inguin/o   groin
insulin/o   insulin (pancreatic hormone)
inter-   between
intra-   within; into
iod/o   iodine
ion/o   ion; to wander
-ion   process
-ior   pertaining to
ipsi-   same
ir-   in
ir/o   iris (colored portion of eye)
irid/o   iris (colored portion of eye)
is/o   same; equal
isch/o   to hold back; back
ischi/o   ischium (part of hip bone)
-ism   process; condition
-ist   specialist
ithy-   erect, straight
-itis   inflammation
-ium   structure; tissue
ixod/i   ticks

Additional Resources

Check out the following resources to support your learning and understanding of medical terminology:

  • Quick Introduction- provides an overview and introduction to medical terminology.
  • Word Building Reference- This resource strengthens your understanding of medical terminology. See how common medical terms are created using the various prefixes, suffixes, and root words.
  • Medical Terms – rules governing singular versus plural versions of medical terms are described.
  • Medical Terminology Exams- twenty new exams were created to test your knowledge of medical terminology.

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