oncometer
noun
on·com·e·ter
äŋ-ˈkäm-ət-ər, än- 
: an instrument for measuring variations in size or volume of the internal organs of the body
Cite this Entry
“Oncometer.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/oncometer. Accessed 3 Nov. 2025.
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