Direction terms
Abbreviations
Prefixes
Suffixes
Root words
100

Toward the head 

Cranial

100

Three times a day 

TID

100

Hyper-

Meaning "high"

100

-itis

inflammation

100

Cardio-

Referring to the heart

200

Dorsal

Along the back \

200

NPO

Nothing by mouth 

200

Tachy-

Meaning "fast"

200

Machine that records

-graph

200

Gastro-

Referring to the stomach 

300

closer to the body

Proximal

300

Urinalysis 

UA

300

Meaning "large, oversized"

Mega-or megal/o

300

Meaning "breathing" 

-pnea

300

Hepa-/hepat/o-

Referring to the liver 

400

Medial 

toward the midline of the body 
400

ADR

Ain't doin' right

400

Py/o-

Meaning "pus"

400

-tomy

to cut into

400

Referring to the intestines 

Enter/o-

500

Plantar 

Bottom of back feet 

500

FLUTD

Feline lower urinary tract disease 

500

Meaning "difficult, abnormal or painful"

Dys-

500

-ize

to use or subject to

500

Referring to air or lungs 

Pneum/o-