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MEDICAL
TERMINOLOGY
The Language of the Health Profession
ORIGIN OF MEDICAL TERMS
Hippocrates was a
Greek physician
known as the
“father of medicine.”
75% of medical
terms are based on
either Greek or Latin
words.
ROOT WORDS
cardi = heart
hepat = liver
neur = nerve
nephr = kidney
cyt = cell
A root is the
foundation or basic
meaning of a word.
May appear with a
prefix or suffix, or
between a prefix or
suffix.
There may be more
than one root word
PREFIX
pre = before
peri = around
hemi = half
micro = small
neo = new
The prefix is a
part of the
word that goes
before the word
root
It changes the
meaning of the
word
Indicates
location, time,
or number.
SUFFIX
itis = inflammation
ology = the study of
ectomy = surgical
removal
plasty = surgical
repair
A suffix is placed
after the root
word (at the end)
It changes the
meaning of the
word
Indicates a
procedure,
condition,
disorder, or
disease
Cardiology
cardi = heart = root
ology = the study of =
suffix
cardiology = the study
of the heart.
Nephritis
nephr = kidney =
root
itis = inflammation
= suffix
nephritis =
inflammation of
the kidney
Determine the word parts and meaning of
the following words:
pericarditis
leukocyte
hepatitis
neuroplasty
pericarditis
peri = around = prefix
cardi = heart = root word
itis = inflammation = suffix
pericarditis = inflammation around the heart
leukocyte
leuk = white = prefix
o = combining vowel
cyte = cell = root word
leukocyte = white cell
hepatitis
hepat = liver = root word
itis = inflammation = suffix
hepatitis = inflammation of the liver
neuroplasty
neur/o = nerve or nerves = root word
o = combining vowel
plasty = surgical repair = suffix
neuroplasty = surgical repair of the nerve
Combining Forms
Basic Rules for using the
Combining Vowel
The combining vowel is not used when
the suffix begins with a vowel.
Example: neuro/it is
neur/itis
The combining vowel is used when the
suffix begins with a consonant.
Example: neur/plasty
neur/o/plasty