Medical Terminology: Word Roots
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1
Iatr/o
Medicine, physician
2
-Iatry
Medical treatment
3
Medic/o
Medicine, medical treatment
4
Therap/o
Treatment
5
Therapet/o
Treatment
6
-Therapy
Treatment
7
Pharmac/o
Drugs, medicine
8
Pharmaceutic/o
Drugs, medicine
9
Diet/o
Food
10
Chirurgic/o
Surgery
11
Log/o
Word, speech
12
-Logy
The study of
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Nom/o
Law, custom
14
-Nomy
Knowledge/laws of
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Physi/o
Nature, growth, function
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Physic/o
Physical, natural
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Techn/o
Art, skill
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Erg/o
Work, function
19
-Ergasia
Work, function
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San/o
Health
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Sanit/o
Health
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Hygien/o
Health
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Hygiei/o
Health
24
Anthrop/o
Human
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Hom/o
human
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Homin/o
Human
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Idi/o
Individual, distinct
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Dem/o
People
29
Ethn/o
Race, culture
30
Gen/o
race, kind, hereditary, gene
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Andr/o
Male, masculine, stamen of a flower
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Viril/o
Male, masculine
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Gyn/o
Feminine, female, ovary of a flower
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Femin/o
Feminine, female
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Ped/o
Child
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Pueril/o
child
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Ger/o
Elderly, old age
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Geront/o
Elderly, old age
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Presby/o
Elderly, old age
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Sen/o
Elderly, old age
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Senil/o
Elderly, old age
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Gnos/o
A knowing, knowledge
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-Gnosia
A knowing, knowledge
44
-Gnosis
A knowing, knowledge
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Eti/o
Cause
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Aeti/o
Cause
47
Esthesi/o
Sensation, feeling
48
-Esthesia
Sensation, feeling
49
Morb/o
disease
50
Nos/o
Disease
51
Path/o
Disease, feeling, suffering
52
-Pathy
Disease, feeling, suffering
53
-Path
Disease, feeling, suffering
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Mort/o
Death
55
Thanat/o
Death
56
-Thanasia
Death
57
Necr/o
Dead body, dead
58
Febr/o
Fever
59
Pyr/o
Fever, fire
60
Pyret/o
Fever
61
Hem/o
Blood
62
Hemat/o
Blood
63
-Emia
Blood
64
-Hemia
Blood
65
Poly-
Many
66
Multi-
Many
67
Cal/o
Heat
68
Rubr/o
Red, redness
69
Erythr/o
Red, redness (red blood cells)
70
Tum/o
Swelling, tumor, abnormal mass
71
Onc/o
Swelling, tumor, abnormal mass
72
-Oncus
Swelling, tumor, abnormal mass
73
Edemat/o
Swelling
74
-Edema
Swelling
75
Troph/o
Nourishment, growth
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-Trophy
Nourishment, growth
77
Tabet/o
Wasting
78
cel/o
hernia, protrusion
79
Kel/o
Hernia, protrusion
80
-Cele
Hernia, protrusion
81
Cyt/o
Cell
82
Cell/o
Cell
83
Cellul/o
Cell
84
Cancer/o
Cancer, crab
85
Cancr/o
Spreading ulcer
86
Carcin/o
Cancer, crab
87
Mal/o
Bad, faulty
88
Malign/o
Cancerous, becoming worse
89
Kak/o
bad, faulty
90
Cac/o
Bad, faulty
91
Phlog/o
inflammation
92
Dolor/o
Pain
93
Noc/o
Pain
94
Noxi/o
Pain
95
Alg/o
Pain
96
-Algia
Painful condition
97
-Algesia
Sense of pain
98
Odyn/o
Pain
99
-Odynia
Painful condition
100
Acu/o
Needle, needlelike
101
Acut/o
Sharp, pointed
102
Oxy/o
Sharp, quick, acid, oxygen
103
-Oxia
Oxygen condition
104
Chron/o
Time (prolonged)
105
Pur/o
Pus
106
Purul/o
Pus
107
Py/o
Pus
108
Rhe/o
Flow
109
-Rrhea
A discharge (of a fluid)
110
-Rhexis
A rupture
111
-Rrhagia
Rupture with profuse discharge of a fluid (usually blood)
112
-Rrhage
Rupture with profuse discharge of a fluid (usually blood)
113
Rhagad/o
Tear, fissure, cleft
114
-Penia
Decrease, deficiency
115
Mega-
Enlargement, large
116
Megal/o
Enlargement, large
117
-Megaly
Enlargement, large
118
Micr/o
Small
119
Macr/o
Large, long
120
Lys/o
Breakdown, dissolving
121
-Lysis
Breakdown, dissolving
122
Malac/o
Soft, abnormal softening
123
-Malacia
Soft, abnormal softening
124
-Ptosis
Downward displacement, prolapse
125
-Ectasis
Dilation, expansion
126
Schiz/o
A splitting, a cleft
127
-Schisis
A splitting, a cleft
128
Stas/o
A standing, stoppage, a cause to stand
129
Stat/o
A standing, stoppage, a cause to stand
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-Stasis
A standing, stoppage, a cause to stand
131
-Stat
A device for stopping, ceasing something
132
Poiet/o
To make, produce
133
-Poiesis
To make, produce
134
Plast/o
Formed, molded
135
-Plast
Forming cell or organelle
136
-Plasia
Condition of formation, growth
137
Fac/o
To make, cause
138
Fic/o
To make, cause
139
Fact/o
To make, cause
140
Fect/o
To make, cause
141
Gen/o
To become, be produced
142
-Gen
To become, be produced
143
Graph/o
Writing
144
-Graph
A device for an image or written record, or the record itself
145
-Graphy
Process of recording, writing
146
Grammat/o
Something written or drawn
147
-Gram
A record or image of something
148
Metr/o
Measure, measurement
149
-Meter
Measuring instrument
150
-Metry
The process of measuring something
151
-Tomy
Incision
152
-Ectomy
Excision
153
-Tome
Device for making an incision
154
-Stomy
Surgical creation of an opening (stoma)
155
-Plasty
Surgical reconstruction
156
-Rrhaphy
Surgical suturing
157
-Pexy
Surgical fixation
158
-Tripsy
Crushing
159
-Scopy
Examination, especially with a device
160
-Scope
A device for looking into a body part
161
-Desis
Surgical binding, fusion
162
-Centesis
Surgical puncture for aspiration
163
-Section
A cutting
164
-Clasty
A surgical breaking
165
-Trypesis
A surgical boring
166
Tom/o
Cut, a section
167
Stom/o
A mouth, an opening
168
Stomat/o
A mouth, an opening
169
Pex/o
Fixation, binding
170
-Pexis
Fixation, binding
171
Rhaph/o
Seam, suture
172
Rhaphid/o
Needle, needle-like
173
Clast/o
Broken, breaking
174
-Clast
A breaker of things
175
-Clasis
A breaking of something
176
-Clasia
A breaking of something
177
Scop/o
To view
178
Sect/o
Cut, a section
179
Cis/o
Kill, cut
180
-Cide
Kill, cut
181
Tript/o
Crushing, grinding
182
Trepan/o
Borer, drilling
183
Trephin/o
Borer, drilling
184
Trypan/o
Borer; a genus of parasite (protozoa called trypanosomes)
185
Hen/o
One
186
Mon/o
One, alone
187
Dy/o
Two, a pair
188
Tri/o
Three
189
Tetr/a
Four
190
Pent/a
Five
191
Hex/a
Six
192
Hept/a
Seven
193
Okt/a
Eight
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Oct/a
Eight
195
Enne/a
Nine
196
Dek/a
Ten
197
Dec/a
Ten
198
Henek/a
Eleven
199
Dodek/a
Twelve
200
Hekat/o
One hundred
201
Hecat/o
One hundred
202
Hekt/o
One hundred
203
Hect/o
One hundred
204
Chili/o
One thousand
205
Kil/o
One thousand
206
Myri/o
Ten thousand, innumberable
207
Prot/o
First
208
Deuter/o
Second
209
Trit/o
Third
210
Tetart/o
Fourth, one-fourth
211
Bis-
Two times, two
212
Tris-
Three times, three
213
Ter-
Three times, three
214
Tetrakis-
Four times, four
215
Quater-
Four times, four
216
Un/i
One
217
Du/o
Two
218
Tri-
Three
219
Quadr/i
Four
220
Quinqu/e
Five
221
Sex/a
Six
222
Sept/i
Seven
223
Oct/o
Eight
224
Nov/i
Nine
225
Dec/a
Ten
226
Cent/o
One hundred
227
Mill/i
One thousand
228
Prim/i
First, one
229
Secund/i
Second, two
230
Terti/a
Third, three
231
Quarti/a
Fourth, four
232
Sext/i
Sixth, six
233
Septim/a
Seventh, seven
234
Octav/a
Eighth, eight
235
Non/a
Ninth, nine
236
Decim/o
Tenth, ten
237
Hydr/o
Water, liquid, hydrogen
238
Heli/o
Sun, helium
239
Lith/o
Stone, lithium
240
Nitr/o
Nitrogenous
241
Ox/o
Oxygen
242
Neon/o
Neon
243
Ne/o
New, recent
244
Phosph/o
Phosphorous
245
Chlor/o
Green, chlorine
246
Chromi/o
Chromium
247
Chrom/o
Color
248
Chromat/o
Color
249
Seleni/o
Selenium
250
Selen/o
Moon, crescent-shaped
251
Brom/o
Foul-smelling, bromine
252
Crypt/o
Hidden, covered, krypton
253
Krypt/o
Hidden, covered, krypton
254
Rhod/o
Rose, red, rhodium
255
Xen/o
Foreign, strange, xenon
256
Bar/o
Weight, pressure
257
Bary/o
Heavy, dull
258
Osm/o
Odor, smell, osmium
259
Thall/o
Young branch, shoot, simple plants (i.e. fungi, lichens, algae), thallium
260
Aktin/o
Ray, ray-like, radiation, actinium
261
Carb/o
Carbon, carbon dioxide
262
Natri/o
Sodium
263
Natr/o
Sodium
264
Silic/o
Silica, silicon
265
Kali/o
Potassium
266
Kal/o
Potassium
267
Calc/o
Calcium, lime
268
Ferr/o
Iron
269
Argent/o
Silver
270
Cupr/o
Copper
271
Stann/o
Tin
272
Aur/o
Gold
273
Hydrargyr/o
Mercury
274
Mer/o
Part, partial
275
-Mer
Part, partial
276
-Mere
Part, partial
277
Goni/o
Angle
278
Gon/o
Angle
279
-Gon
Angle
280
Erg/o
Work
281
-Urgy
Work
282
Pyr/o
Fire, fever
283
Hygr/o
Moisture, wet, humidity
284
Therm/o
Heat, temperature
285
-Therm
Heat, temperature
286
Calor/o
Heat, calorie
287
cal/o
Heat, calorie
288
Stoich/o
Element
289
Psychr/o
Cold
290
Xer/o
Dry
291
Ge/o
Earth, land
292
Aer/o
Air
293
Top/o
Place
294
-Tope
Place
295
Trop/o
Turn, change
296
-Trope
Turn, change
297
Cis/o
Cut, kill
298
-Cide
Cut, kill
299
Trans-
Across, through
300
Cis-
On this side
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