Medication prefixes
Abbreviations
Common symbols
Position, Direction, Location
Prefixes
100

M

What is mega? one million or 1,000,000

100

Glasgow Coma Scale

What is GCS?

100

B

What is beta?

100

On or affecting the same side

What is ipsi?

100

bi

What is two?

200

mc

What is micro? 1/1,000,000

200

AAA

What is abdominal aortic aneurysm?

200

/

What is per?

200
Adduction

What is to, toward

200

enter/o

What is pertaining to the intestines or gut?
300

m

What is milli 1/1,000 or 0.001

300

I&O

What is intake and output?

300

Times 2

What is x2

300

supra

What is above, upper?

300
dys

What is difficult, painful, abnormal?

400

c

What is centi? 10 or 0.01

400

Deep venous thrombosis

What is DVT?

400

<

What is less than?

400

Between

What is inter?

400

Pertaining to the head

What is cephalo?

500

k

What is kilo? 1,000

500

Fracture

What is fx?

500

What is normal?

500

Within

What in endo?

500

Pertaining to the kidney

What is nephr/o?

M
e
n
u