Prefixes 1-20

Prefix Elements 1-5

100

a-

not or without

200

an-

not or without

300

auto-

self

400

bi-

two

500

brady-

slow

Prefix Elements 6-10

100

dys-

bad

200

hemi-

half

300

hyper-

above, more than normal

400

hypo-

under

500

inter-

between

Prefix Elements 11-15

100

intra-

within

200

multi-

many

300

peri-

around or near

400

poly-

many

500

post-

after

Prefix Elements 16-20

100

pre-

before

200

quad-

four

300

retro-

backwards

400

semi-

half

500

sub-

under

Body Systems

100

Thymus

Lymphatic or Endocrine

200

Aorta and superior/inferior vena cava

Circulatory

300

Adrenal glands

Endocrine

400

Liver, gallbladder and pancreas

Digestive

500

Humerus and femur

Skeletal