Medical Word Parts: Root Words

abdomin/o

abdomen

ablat/o

take away; destroy

abort/o

stop prematurely

abras/o

scrape off

absorpt/o

absorb or take in

access/o

supplemental or contributing part

accommod/o

to adapt

acetabul/o

acetabulum (hip socket)

acid/o

acid (low pH)

acous/o

hearing, sound

acr/o

extremity; highest point

acromi/o

acromion

act/o

action; to do

actin/o

rays of the sun

acu/o

needle; sharpness

acus/o

the sense of hearing

addict/o

surrender to; be controlled by

aden/o

gland

adhes/o

to stick to

adip/o

fat

adjuv/o

giving help or assistance

adnex/o

accessory connecting parts

adolesc/o

the beginning of being an adult

adren/o; adrenal/o

adrenal gland

affect/o

state of mind; mood; to have an influence on

affer/o

bring toward the center

ag/o

to lead to

agglutin/o

clumping, sticking

aggreg/o

crowding together

agon/o

causing action

agor/a

open area or space

albin/o

white

albumin/o

albumin

alg/o

pain

alges/o

sensation of pain

align/o

arranged in a straight line

aliment/o

food, nourishment

alkal/o

base (high pH)

all/o

other; strange

allerg/o

allergy

alveol/o

alveolus (air sac)

ambly/o

dimness

ambulat/o

walking

amnes/o

forgetfulness

amni/o

amnion (fetal membrane)

amo/ami

love

amput/o; amputat/o

to cut off

amygdal/o

almond shape

amyl/o

carbohydrate, starch

an/o

anus

anabol/o

building up

analy/o

to separate

anastom/o

unite two tubular structures

ancill/o

servant, accessory

andr/o

male

aneurysm/o

aneurysm (dilation)

angi/o

blood vessel; lymphatic vessel

anis/o

unequal

ankyl/o

fused together, stiff

antagon/o

oppose or work against

capit/o

head

carcin/o

cancer

card/o; cardi

heart

caut/o

burn

cervic/o

neck; cervix

chlor/o

green

chondr/o

cartilage

cirrh/o

yellow

coccyg/o

coccyx

corpor/o

body

crani/o

skull, cranium

crur/o

leg or thigh

cry/o

cold

cutane/o

skin

cyan/o

blue

cyt/o

cell

derm/o; dermat/o

skin

dors/o

back

electr/o

electricity

eosin/o

rose colored or red

erythr/o

red

fibr/o

fiber; fibrous

gastr/o

stomach

hem/o; hema; hemat/o

blood

hidr/o

sweat

hist/o; histi/o

tissue

hydr/o

water

hyster/o

uterus

ichthy/o

fish

ili/o

ilium

inguin/o

groin

jaund/o

yellow

kel/o

fibrous growth

kerat/o

hard, horny; also refers to the cornea of the eye

later/o

side

leuk/o

white

lip/o

fat

lith/o

stone; calus

lumb/o

loins, lower back

lute/o

yellow

lymph/o

lymph

macr/o

large

medi/o

middle

megal/o

enlargement or enlarged

melan/o

black

men/o

menstrual cycle

my/o

muscle

myc/o

fungus

nas/o

nose

nucle/o

nucleus

onych/o

nails

pachy

thick

par/o

equal; usual; typical; average

ped/o

foot

pelv/i

pelvis

peritone/o

peritoneum

phag/o

eating or swallowing

pharyng/o

throat

pil/o

hair

poli/o

gray

poster/o

back

proxim/o

near

pulmon/o

lungs

purpur/o

purple

sacr/o

sacrum

salping/o

fallopian tubes

scler/o

hard; also refers to the sclera of the eye

seb/o

sebum

skelet/o

skeletal; skeleton

spin/o

spine

squam/o

scales

thorac/o

chest

umbilic/o

navel

ur/o

urine

ventr/o

belly, front side

vertebr/o

vertebra

viscer/o

internal organs

xanth/o

yellow

xer/o

dryness

blast/o

embryonic stage of development

calc/o; calc/i

calcium

calcane/o

heel bone

carp/o

wrist

clavicul/o

collarbone

cost/o

ribs

femor/o

femur

fibul/o

fibula

gen/o

to produce

humer/o

humerus

ischi/o

ischiumi

kyph/o

humpback; pertaining to a hump

lamin/o

lamina

lord/o

swayback; bent

malac/o

softening

mandibul/o

mandible (lower jaw bone)

mastoid/o

mastoid process

maxill/o

upper jaw

metacarp/o

hand bones

metatars/o

foot bones

myel/o

spinal cord or bone marrow

olecran/o

elbow

orth/o

bone

patell/o; patell/a

kneecap

pelv/i

pelvis

phalang/o

fingers, toes

por/o

cavity, opening, passage, or pore

pub/o

pubis

rach/i

spinal column

radi/o

radiation; also refers to the radius

scapul/o

shoulder blade

scoli/o

crooked, bent

spondyl/o

vertebra

sten/o

short, contracted, or narrow

stern/o

sternum

tars/o

ankle bones

tempor/o

temples of the head

bucc/o

cheek

fasci/o

band of fibrous tissue

leiomy/o

smooth muscle

myos/o

muscle

pector/o

pertaining to the chest

rhabdomy/o

striated muslce; skeletal muscle

troph/o

development

myos/o

muslce

arthr/o

joint

articul/o

joint

burs/o

bursa

ligament/o

ligament

oste/o

bone

ten/o; tendin/o; tend/o

tendon

cerebell/o

cerebellum

cerebr/o

cerebrum

encelphal/o

brain

esthesi/o

feeling, sensation

gli/o

neuroglia or gluey substance

kinesi/o

movement

mening/o

meninges

narc/o

sleep

neur/o

nerve

thec/o

sheath

ton/o

tension, tone

ventricul/o

ventricle of the heart or brain

bas/o

base

chrom/o

color

coagul/o

clumping

hem/o; hemat/o

blood

is/o

equal

kary/o

nucleus

morph/o

form, shape

poikil/o

varied; irregular

spider/o

iron

spher/o

round; sphere

thromb/o

clot

immun/o

immune, protection

lymphaden/o

lymph gland

lymphangi/o

lymph vessel

mon/o

one

sarc/o

flesh

hem/o; hemat/o

blood

bronch/o; bronchiol/o

bronchus

epiglott/o

epiglottis

laryng/o

larynx

phren/o

mind; also refers to the diaphragm

pleur/o

pleura

pne/o

breathing

pneum/o; peneumon/o

lungs; air

rhin/o

nose

sinus/o

sinus

thor/a; thorac/o

chest

trache/o

trachea

arter/o; arteri/o

artery

arteriol/o

arteriole

arther/o

fatty

coron/o

heart

append/o; appendic/o

appendix

bil/i

bile

cec/o

cecum

celi/o

pertaining to the abdomen

cheil/o

lips

chol/e

bile

cholecyst/o

gallbladder

choledoch/o

common bile duc

col/o; colon/o

colon

dent/o

tooth

duoden/o

duodenum; first part of small intestine

enter/o

intestine

esophag/o

esophagus

gingiv/o

gums

gloss/o

tongue

gluc/o; glyc/o

sugar, sweet

hepat/o

liver

ile/o

ileum

jejun/o

jejunum

lapar/o

abdominal wall

lingu/o

tongue

odont/o

teeth

or/o

mouth

pancreat/o

pancreas

proct/o

anus or rectum

rect/o

rectum

sial/o

salivary gland; saliva

sigmoid/o

sigmoid colon

splen/o

spleen

steat/o

fat

stomat/o

mouth

gloss/o

tongue

gluc/o

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