Abbreviations
Prefix
Suffix
Combining Form
Disease
100

PRN

Pro re nata

As needed

100

away from

ab-

100

weakness

-asthenia

100

fatty

adip(o)

100

bulging of the eyes

exophthalmos

Common in Graves' Disease

200

By Mouth

po 

per os

200

against

anti-

200

hernia

-cele

200

heel

calcane(o)

200

Varicella virus causes

Chicken pox

300

NSAID

Non-steriodal Anti-inflammatory Drug

300

both

ambi-

300

binding

-desis

300

cartilage

chondr(o)
300

hypersecretion of GH after puberty which leads to enlarged hands, feet, face.

Acromegaly

400

3x a day

Ter in die

tid

400

short

brachy-

400

dilation

-ectasia

400

spine

rachi(o)

400

Disease of lymph node or gland

adenopathy

500

HEENT

Head, ears, eyes, nose, throat

500

after

meta-

500

breaking

-clasis

500

vag(o)

Vagus Nerve

500

Common symptoms of diabetes insipidus

polydipsia and polyuria