trans·​mit·​tance | \ tran(t)s-ˈmi-tᵊn(t)s How to pronounce transmittance (audio) , tranz- \

Definition of transmittance

2 : the fraction of radiant energy that having entered a layer of absorbing matter reaches its farther boundary

Examples of transmittance in a Sentence

Recent Examples on the Web Although the light transmittance is high, which is close to the experience of ordinary cameras, its UPC appearance is not perfect. Chris Smith, BGR, 11 June 2021 According to him, the light transmittance is close to the experience of regular selfie cameras. Chris Smith, BGR, 7 June 2021 It was based on a transmittance approach (shining light through tissues), incorporating fiber optics and eight wavelengths of light. Amy Moran-thomas, Wired, 4 June 2021 The teaser also says the optical fluid has high light transmittance, ultra-low dispersion, and can resist extreme environments. Chris Smith, BGR, 25 Mar. 2021 Color classification is determined by measuring a syrup's internal transmittance by passing a 560nm wavelength of light through a 10mm sample. Jennifer Ouellette, Ars Technica, 28 May 2020 In those first weeks in late March, uncertainty about the virus’s transmittance and the lack of adequate, accessible protective gear exposed medical personnel to unknown risks. Yvette Orozco Staff Writer, Houston Chronicle, 2 June 2020 For a golden syrup, there must be 75 percent or higher transmittance. Jennifer Ouellette, Ars Technica, 28 May 2020 By adjusting the spacing of the holes, the team were able to make wafers with transmittances of between 20% and 50% of incident light. The Economist, 12 Dec. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'transmittance.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of transmittance

circa 1855, in the meaning defined at sense 1

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The first known use of transmittance was circa 1855

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Cite this Entry

“Transmittance.” Dictionary, Merriam-Webster, Accessed 16 Oct. 2021.

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More Definitions for transmittance


trans·​mit·​tance | \ -ˈmit-ᵊn(t)s How to pronounce transmittance (audio) \

Medical Definition of transmittance

2 : the fraction of radiant energy that having entered a layer of absorbing matter reaches its farther boundary


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