sensitometer

1 of 2

noun (1)

sen·​si·​tom·​e·​ter ˌsen(t)-sə-ˈtä-mə-tər How to pronounce sensitometer (audio)
: an instrument for measuring sensitivity of photographic material
sensitometric adjective
sensitometry noun

sensitometry

2 of 2

noun (2)

sen·​si·​tom·​e·​try ˌsen(t)səˈtämə‧trē How to pronounce sensitometry (audio)
plural -es
: the science, art, or act of measuring sensitivity (as of photographic material or of the human eye)

Word History

Etymology

Noun (1)

International Scientific Vocabulary sensitive + -o- + -meter

Noun (2)

International Scientific Vocabulary sensito- (from sensitive + -o-) + -metry

First Known Use

Noun (1)

1880, in the meaning defined above

Time Traveler
The first known use of sensitometer was in 1880

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Cite this Entry

“Sensitometer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sensitometer. Accessed 12 Jun. 2026.

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