Medical Terminology prefixes

a- / an- / in-

without, not, absence of

myo- / my-

muscle

cardio-

heart

ifarct-

tissue death from a lack of blood supply

melan-

black

cyano-

blue

pathy-

disease

vaso-

vessel

intra-

within

pre-

before

hyper-

excessive, above normal

ambi-

both, both sides, around, about

bi-

two

di-

twice, two, double

hemi- / semi-

half

iso-

same, equal

macro-

large

micro-

small

mono- / uni-

one

multi-

many

oligo-

deficiency, few

pan-

all

poly-

much

quadri-, tetra-

four

tri-

three

ab-

away from

ad-

toward

anti-

against

brady-

slow

con-

with, together

contra-

against, opposite

circum-

around

dia- / trans-

through, across

ec- / ecto-

out, outside

en- / end- / endo- / in- / intra-

within, in, inner

epi-

upon, above

eso-

inward

ex / exo- / extra-

away from, outside, external

hyper- / super- / supra-

excessive, above

hypo- / infra- / sub-

below, beneath

inter-

between

para-

beside, near

peri-

around

post-

after

pro-

before, forward

re- / retro-

behind, back

tachy-

rapid, fast

ultra-

beyond

auto-

self

dys-

difficult, bad, painful

eu-

good, normal

mal-

bad, inadequate

neo-

new

tox-

poision, toxic

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