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[ 1 ] Quick Introduction.

[ 2 ] Word Building Reference: new icon   This is a great reference to help strengthen your understanding of medical terminology.   See how common medical terms are created using the various prefixes, suffixes, and root words.

[ 3 ]  Medical Terms – Singular versus plural rules

[ 4 ]  Medical Terminology Exams  new icon   Twenty new exams were created to test your knowledge of medical terminology.

[ 5 ]  Medical Terms – Prefixes, roots, suffixes (see links below)

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.
Example: cholecystitis. Root = ‘cholecyst/o’ -Definition: gallbladder and the suffix is ‘itis’ – Definition: inflammation. Translation: inflammation of the gallbladder.

Alphabetical Listing of Med Terms

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Medical Terminology Reference [E]

-eal   pertaining to
ec-   out; outside
echin/o   spiny, prickly
echo-   reflected sound
-ectasia   dilation; dilatation; widening
-ectasis   dilation; dilatation; widening
ecto-   out; outside
ectro/o   congenital absence
-ectomy   removal; excision; resection
-edema   swelling
eight   octa-, octi-
-elasma   flat plate
electr/o   electricity
ele/o   oil
em-   in
-ema   condition
embolo/o   embolus
embry/o   embryo
-emesis   vomiting
-emia   blood condition
-emic   pertaining to blood condition
emmetr/o   in due measure
-emphraxis   stoppage, obstruction
en-   in; within
enanti/o   opposite, opposed
encephal/o   brain
end-   in; within
endo-   in; within
enter/o   intestines (usually small intestine)
eosin/o   red; rosy; dawn-colored
epi-   above; upon; on
epididym/o   epididymis
epiglott/o   epiglottis
episi/o   vulva
epitheli/o   skin; epithelium
equi-   equality, equal
equin/o   horse
-er   one who
erg/o   work
erethism/o   irritation
erythem/o   flushed; redness
erythr/o   red
eschar/o   scab
-esis   action; condition; state of
eso-   inward
esophag/o   esophagus
esthes/o   nervous sensation
esthesi/o   nervous sensation
-esthesia   nervous sensation
estr/o   female
ethm/o   sieve
eti/o   cause
eu-   good; normal
-eurysm   widening
ex-   out; away from
exanthemat/o   rash
exo-   out; away from
extra-   outside


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