Medical Prefixes: Word Parts
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1
a-
without, not
2
an-
without, not
3
ab-
away from
4
ad-
toward, near
5
-algia
pain
6
angi/o
vessel
7
anter/o
before, forward
8
ante
before, forward
9
anti-
against
10
arthr/o
joint
11
auto-
self
12
bi-
two
13
bio-
life, living
14
brachy-
short
15
brady-
slow
16
cardi/o
heart
17
contra-
against, opposite
18
cost/o
rib
19
crani/o
skull
20
cry/o
cold
21
cyan/o
blue
22
derm/o
skin
23
dermat/o
skin
24
di-
two
25
dia-
through, throughout
26
dipl/o
double
27
dis-
apart, to separate
28
dist/o
distant
29
-dynia
pain
30
dys-
bad, difficult, painful
31
ec-
outside, out
32
ecto-
outside, out
33
-edema
swelling
34
-emia
blood condition
35
en-
inside, within
36
endo-
inside, within
37
epi-
above, over, upon
38
ex-
out, away from
39
exo-
outside, outward
40
extra
outside
41
gastr/o
stomach
42
-gen
production, formation
43
gen/o-
production, formation
44
genesis
production, formation
45
gluc/o
glucose, sugar
46
-graphy
process of recording
47
hem/o
blood
48
hemat/o
blood
49
hemi-
half
50
hetero-
different, other
51
homo-
same, similar
52
hydr/o
water, hydrogen
53
hyper-
above, excessive, beyond
54
hypo-
under, below, deficient
55
-ician
specialist
56
inter-
between
57
intra-
within
58
-ist
specialist
59
-logist
specialist
60
-itis
inflammation
61
kinesi/o
movement
62
kinesia
movement
63
-kinetic
movement
64
later/o
side
65
leuk/o
white
66
-logy
study of
67
-lysis
breakdown
68
medi/o
middle
69
mega-
very large number, big
70
macr/o
very large number, big
71
meso-
middle
72
meta-
after, beyond, change
73
-meter
instrument for measuring
74
-metry
process of measuring
75
mono-
one
76
multi-
many, much
77
my/o
muscle
78
myos/o
muscle
79
necr/o
death
80
neo-
new
81
neur/o
nerve
82
ocul/o
eye
83
odont/o
tooth
84
-oid
resembling
85
olfact/o
smell
86
-oma
tumor, mass
87
-opsy
to view
88
orth/o
straight, normal, correct
89
-osis
condition, status, abnormal increase
90
oste/o
bone
91
para-
alongside, near, beyond, abnormal, increase
92
-paresis
partial paralysis
93
path/o
disease
94
-penia
deficiency
95
-phobia
fear, aversion
96
phob/o
fear, aversion
97
phon/o
voice, sound
98
phonia
voice, sound
99
-plasty
surgical correction or repair
100
-plegia
paralysis
101
pneum/o
lung, air, breathe
102
pnea
lung, air, breathe
103
poly-
many, much
104
-porosis
porous, decrease in density
105
post-
after, behind
106
pre-
before, in front of
107
fore-
before, in front of
108
pro-
before
109
ante
before
110
pseudo
false
111
psor/o
itching
112
psych/o
mind
113
-ptosis
prolapse, drooping
114
pulmon/o
lung
115
pneum/o
lung
116
quadri-
four
117
radi/o
x-ray, radiation
118
re-
back, again
119
respir/o
breathe, breathing
120
respirat/o
breathe, breathing
121
retr/o
backwards
122
rhin/o
nose
123
scler/o
hard
124
-scope
to view
125
scopy
to view
126
semi
half
127
-stasis
standing still, standing
128
sten/o
hardening
129
-stomy
surgical opening creation
130
sub-
under, beneath
131
super-
above, beyond
132
supra-
above, beyond
133
tachy-
fast, rapid, swift
134
therm/o
heat as therapy
135
tox/o
poison
136
toxic/o
poison
137
trans-
across
138
tri-
three
139
ultra-
beyond, excess
140
un-
not, reversal
141
uni-
one
142
vas/o
vessel, blood vessel, vas deferens
143
vascul/o
vessel, blood vessel, vas deferens
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