Medical Prefixes

a-, an-

• excessive, above

• around, surrounding

• no, not, without

• back, again

post-

• through, complete

• after

• before

• out

epi-

• above, upon

• after

• against

• excessive, above

ultra-

• back, again

• within

• small

• beyond, excess

anti-, contra-

• within

• excess, above

• against

• before

dys-

• in front of

• before

• abnormal, painful, difficult

• no, not, without

hyper-

• excessive, above

• before

• above, upon

• through, complete

re-

• within

• around, surrounding

• before

• back, again

auto-

• against

• self

• in front of

• small

dia-

• after

• around, surrounding

• through, complete

• abnormal, painful, difficult