Prefixes
Suffixes
Acronyms
Ending/Beginning in "O"
One word definitions
100

Neuro-

Nerve, Nervous System

100

-itis

Inflammation, Inflammation of

100

CNS

Central Nervous System

100

Hypo-

Decreased, Deficient, low, under, less than normal.

100

-plegia

Paralysis

200

Epi-

Upon, Over, Upper

200

-al

Like, Similar, Pertaining to

200

EKG/ECG

Electrocardiogram

200

Hydro-

Water

200

Quad-

Four

300

Vertebro-

Spine,Vertebrae

300

-ologist

Person who does/ studies

300

CT

Computerized Tomography

300

-Ology

Study of, Science of

300

Hemi-

Half

400

Para-

Near, Beside, beyond, abnormal, lower half of body

400

-cele

Swelling, Tumor, Cavity, Hernia

400

CVA

Cerebral Vascular Accident 

400

Cranio-

Pertaining to the skull

400

Cerebro-

Brain

500

Meningo-

Membranes covering the brain and spinal cord. 
500

-otomy

Cutting into

500

PNS

Peripheral Nervous System

500

Cephalo-

Head, Pertaining to the head

500

Encephalo-

Brain