ab·​sorp·​tiv·​i·​ty | \əb-ˌsȯrp-ˈti-və-tē, -ˌzȯrp-\
plural absorptivities

Definition of absorptivity 

: the property of a body that determines the fraction of incident radiation absorbed by the body

Examples of absorptivity in a Sentence

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The researchers also noted that controlling the microscopic structure of the sail—such as by using alternating layers of material, each only nanometers (billionths of a meter) thick—could boost its reflectivity and reduce its absorptivity. Charles Q. Choi, Scientific American, "Building Sails for Interstellar Probes Will Be Tough, But Not Impossible," 10 May 2018

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

First Known Use of absorptivity

1872, in the meaning defined above

History and Etymology for absorptivity

absorptive + -ity

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The first known use of absorptivity was in 1872

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ab·​sorp·​tiv·​i·​ty | \əb-ˌsȯrp-ˈtiv-ət-ē, -ˌzȯrp- \
plural absorptivities

Medical Definition of absorptivity 

: the property of a body that determines the fraction of incident radiation absorbed by the body

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What made you want to look up absorptivity? Please tell us where you read or heard it (including the quote, if possible).


obstinately defiant of authority

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