Medical Terminology Chapter 1 - Prefixes

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General Prefix

refers to size, shape, direction, location

ab-

away from

ad-

to; toward

ante-

before

astr-

star

auto-

self

brady-

slow

ect-

outside; outer

en-

within; in

endo-

within; inner

epi-

above; upon

ex-

out; outer

hemi-

half

infra-

below; inferior

inter-

between; among

intra-

within

iso-

same; equal

macro-

large

meta-

change; after; beyond

micro-

small

multi-

many

para-

near; beside

peri-

around; surrounding

poly-

many

post-

after

pre-

before; in front of

retro-

behind; backward

semi-

half

sub-

below; under

super-

above; over; excess

supra-

above; on top of

sym-

with; association

syn-

together; with; union

tachy-

fast

Negative Prefix

opposite meaning of a word

Numeric Prefix

numerical value to a word

Disease and Problem Prefix

provides information about abnormal structure or function

a; an; ana-

no; not; without

anti-

against

contra-

against; opposite

bi-

two; double; both

centi-

hundred; hundredth

milli-

one thousandth

quadr-

four

tri-

three

carcin-

cancerous

dys-

difficult; painful

hyper-

above; excessive

hypo-

deficient; below

mal-

bad; poor; abnormal

Prefix

a word element added to the beginning of a word root

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