A prefix is an element added to the beginning of a root or combining form to further expand the meaning of a medical term. Prefixes typically indicate time, number, size, or location. Prefixes never require a combining vowel and not every term requires a prefix. Suffixes change the meaning of the word. It is a group of letters attached to the end of a root or combining form. If a suffix begins with a consonant, it must follow a combining vowel. But if the suffix begins with a vowel, then no combining vowel is needed. A few medical terms can have two suffixes. Suffixes that are different can have the same meaning. Suffixes can also give clues to the meanings of words
pre-
before
post-
after
peri-
around
uni-
one
bi-
two
epi-
above
hypo-
below
hyper-
above
micro-
small
macro-
large
-ary
pertaining to
-ia
condition of
-ation
process of
-scopy
scope
-ic
pertaining to
-ion
action or condition
-um
structure
-pathy
disease
-emia
blood condition
-emic
pertaining to blood condition
AMI
acute myocardial infarction
CXR
Chest X-Ray
EKG
electrocardiogram
IV
intravenous