A/an
Absence of/without
Ante
Before/in front of
Antebrachial
Anti
Against
Antibiotic
Bi
Two/both
Brady
Slow
Bradycardia
Contra
Opposite/against
Contradict
Cyano
Blue
Dys
Difficulty
Dyslexia
Endo
Within/inside
Endothermic
Erythro
Red
Erythrocytes
Hemi
Half
Hemisphere
Hyper
Excessive/above
Hyperactive
Hypo
Too little/below
Hypoglycemic
Inter
Between
Interlock
Intra
Inside
Leuko
White
Leukocyte
Peri
Around/surround
Pericardium
Post
After
Post-op
Retro
Backward/behind
Retrospect
Pre/pro
Before/in front of
Preemptive, proactive
Semi
Half
Sub
Under/beneath
Super/Supra
Above/superior
Superficial
Tachy
Fast
Tachycardia