absorptance

== English == === Etymology === Circa 20th century, from absorption +‎ -ance. === Pronunciation === (Received Pronunciation) IPA(key): /əbˈzɔːp.tn̩s/ IPA(key): (US) /æbˈsɔɹp.tn̩s/, /æbˈzɔɹp.tn̩s/, /əbˈsɔɹp.tn̩s/, /əbˈzɔɹp.tn̩s/, /æbˈsɔɹp.tn̩ts/, /æbˈzɔɹp.tn̩ts/, /əbˈsɔɹp.tn̩ts/, /əbˈzɔɹp.tn̩ts/ === Noun === absorptance (plural absorptances) (optics, physics) Absorbed radiation and incident radiation in a ratio format; a measurement that shows how well a surface absorbs radiation. [First attested in the mid 20th century.] ==== Translations ==== ==== See also ==== absorbance absorbancy === References ===