The suffix [-iasis] has an original Greek root (such as in [iatros] meaning "healer" or "hospital"). It later became a Latin root meaning "condition, pathology, or disease".

This suffix can be found in many medical terms such as:

• Choledocolithiasis - a condition of stones in the bile duct.
• Elephantiasis - A condiction where a body part grows unusually large, usually lower extremities and/ or scrotum
• Phthiriasis- A condition or infestarion with public or crab lice
• Helminthiasis- Anbodily infestation with a type of parasitic worms called helminths (tapeworms)
• Cystolithiasis -  Bladder stones