This suffix [-(o)centesis] arises from the Greek [kentesis], meaning "to tap" or "to perforate", referring to a needle or trocar.  In practical terms, this suffix means "needle aspiration of". Examples of its use are:

- Pericardiocenteses: Needle aspiration of the pericardium
- Thoracocentesis: Needle aspiration of the thorax. The use of the term "thoracentesis" is wrong!
- Amniocentesis: Needle aspiration of the amniotic sac.
- Arthrocentesis: Needle aspiration of a joint