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Home >Information for Patients > Dictionary Index

Dictionary of Cancer Terms

View in Spanish: Diámetro

Diameter (dy-A-muh-ter)
The length of a straight line that extends from one edge of a tumor or other object, through its center and to the opposite edge. It is usually used to measure the size of round or spherical shapes.



 
 
Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.