Prefixes (Vet Science)

A-, An- 

• Away from
• Without or lack of 
• Self 
• against 

Ab-

• Two, double 
• Around
• With, together
• Away from 

Ad-

• Up, towards
• Self
• Towards, to, near
• Abnormally slow 

Ambi-, Amphi-, Ampho- 

• Both
• Against, opposing 
• Without or lack
• Two 

Ana- 

• Up, towards, apart 
• Down, Forwards
• Opposing 
• With or together 

Ante- 

• Down, away from
• Opposed
• Before, in front of
• Around 

Apo-

• Two
• Down
• Separation from
• Opposed 

Bi- 

• Against
• Two, double
• With 
• Abnormally Fast 

Brady-

• Abnormally slow
• Abnormally fast
• Down
• Up 

Cata- 

• Difficulty 
• Around 
• Apart
• Down, under