sen·si·tom·e·ter
ˌsen(t)-sə-ˈtä-mə-tər
: an instrument for measuring sensitivity of photographic material
sen·si·tom·e·try
ˌsen(t)səˈtämə‧trē
plural -es
: the science, art, or act of measuring sensitivity (as of photographic material or of the human eye)
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Merriam-Webster unabridged



