Medical Prefix

Front 1

a-

Back 1

not, without, lacking, deficient

afebrile, without fever

Front 2

ab-

Back 2

away from

abduct, to draw away from the midline

Front 3

ad-

Back 3

to, toward

adduct, to draw toward the midline

Front 4

ambi-

Back 4

both sides

ambidextrous, to perform manual skills with both hands

Front 5

an-

Back 5

without

anemia, a reduced volume of blood cells

Front 6

ana-

Back 6

upward, again, backward, excess

anaphylaxis, an unusual or exaggerated reaction of an organism to a substance to which it becomes sensitized

Front 7

ante-

Back 7

before, forward

antecubital, situated in front of the elbow

Front 8

antero-

Back 8

front

anterolateral, situated in front and to one side

Front 9

anti-

Back 9

against

antibody, removes foreign antigents

Front 10

at-

Back 10

to

attract, to draw toward

Front 11

bi-

Back 11

two, twice, double, both

bilateral, having two sides; pertaining to two sides

Front 12

brady-

Back 12

slow

bradycardia, an abnormally slow heart rate

Front 13

circum-

Back 13

around

circumscribed, confined to a limited space

Front 14

con-

Back 14

with

congenital, existing from the time of birth

Front 15

contra-

Back 15

against, opposite

contraindicated, inadvisable

Front 16

de-

Back 16

down, undoing

descending, coming down from

Front 17

di-

Back 17

twice, double

diplegia, paralysis affecting like parts on both sides of the body

Front 18

dia-

Back 18

through, across, apart

diaphragm, the partition that separates the abdominal and thoracic cavities

Front 19

dys-

Back 19

bad, difficult, abnormal, incomplete

dyspnea, labored breathing

Front 20

ecto-

Back 20

outer, outside of

ectopic, located away from the normal position

Front 21

endo-

Back 21

within

endotracheal, within the trachea

Front 22

ep-, epi-

Back 22

over, on, upon

epidermis, the outermost layer of skin

Front 23

ex-

Back 23

out of, away from

excrement, waste material disharged from the body

Front 24

extra-

Back 24

on the outside, beyond, in addition

extracorporeal, outside the body

Front 25

hemi-

Back 25

one-alf

hemiplegia, paralysis of one side of the body

Front 26

hem, hemo

Back 26

refers to blood

hematology, field of medicine concerned with the study of diseases of the blood and bone marrow

Front 27

homeo-

Back 27

same, equal

homeosasis, system regulated so that internal conditions remain stable and relatively constant.

Front 28

hyper-

Back 28

beyond normal, excessive

hypertension, abnormally high blood pressure

Front 29

hypo-

Back 29

below normal, deficient, under, beneath

hypotension, abnormally low blood pressure

Front 30

il-

Back 30

negative

illegible, cannot be read

Front 31

im-

Back 31

negative

immature, not mature.

Front 32

in-

Back 32

in, into, within

incise, to cut into

Front 33

infra-

Back 33

beneath, below

infracostal, below a rib, or below the ribs

Front 34

inter-

Back 34

between

intercostal, between two ribs