Common
Medical Prefixes
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| Prefix |
Meaning |
Example |
| A |
without
or absence of |
ametria |
| Ab |
from;
away from |
abduction |
| Ad |
to;
toward |
adduction |
| An |
without
or absence of |
anaerobic |
| Ana |
up;
again; backward |
anaphoresis |
| Ante |
before |
anteflexion |
| Anti |
against |
antibacterial |
| Apo |
upon |
aponeurotic |
| Bi |
two |
bimanual |
| Bin |
two |
binary |
| Brady |
slow |
bradycardia |
| Cata |
down |
catabatic |
| Con |
together |
conjugal |
| Contra |
against |
contraceptive |
| De |
from;
down from; lack of |
debride |
| Dia |
thorough;
complete |
diameter |
| Dis |
to
undo; free from |
dislocate |
| Dys |
difficult;
labored; painful; abnormal |
dysplasia |
| Ecto |
outside;
outer |
ectocardia |
| Endo |
within |
endosalpinx |
| Epi |
on;
upon; over |
epithelial |
| Eso |
inward |
esotropia |
| Eu |
normal;
good |
eupepsia |
| Ex |
outside;
outward |
excrete |
| Exo |
outside;
outward |
exophthalmos |
| Extra |
outside
of; beyond |
extracarpal |
| Hemi |
half |
hemidiaphragm |
| Hyper |
above;
excessive |
hypertension |
| Hypo |
below;
incomplete; deficient |
hypoglycemic |
| In |
in;
into; not |
intubate |
| Infra |
under;
below |
infraglottic |
| Inter |
between |
intercartilaginous |
| Intra |
within |
intravenous |
| Mal |
bad |
malabsorption |
| Meso |
middle |
mesocolon |
| Meta |
after;
beyond; change |
metastatic |
| Micro |
small |
micronodular |
| Multi |
many |
multilobar |
| Neo |
new |
neonatal |
| Nulli |
none |
nulliparous |
| Pan |
all;
total |
pancytopenia |
| Para |
beside;
beyond; around |
paranormal |
| Per |
through |
percutaneous |
| Peri |
surrounding
(outer) |
pericardium |
| Poly |
many;
much |
polyopia |
| Post |
after |
postembryonic |
| Pre |
before;
in front of |
preoperative |
| Pro |
before |
prodromal |
| Re |
back |
reflux |
| Retro |
back;
behind |
retrograde |
| Semi |
half |
semirecumbent |
| Sub |
under;
below |
subcutaneous |
| Super |
over;
above |
superimpose |
| Supra |
above |
suprascleral |
| Sym |
together;
joined |
symbiotic |
| Syn |
together;
joined |
synergetic |
| Tachy |
fast;
rapid |
tachycardia |
| Tetra |
four |
tetrameric |
| Trans |
through;
across; beyond |
transurethral |
| Tri |
three |
trilocular |
| Ultra |
beyond;
excess |
ultrasound |
| Uni |
one |
uniseptate |
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