ap·​er·​tom·​e·​ter ˌap-ər-ˈtäm-ət-ər How to pronounce apertometer (audio)
: an instrument for measuring the numerical aperture of objectives (as those of a microscope)

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Cite this Entry

“Apertometer.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/apertometer. Accessed 22 Jun. 2024.

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