emittance

noun

emit·​tance ē-ˈmi-tᵊn(t)s 

1

: the energy radiated by the surface of a body per second per unit area

2

: emissivity

Example Sentences

Recent Examples on the Web

In the Composer's Inspiration sound chamber gallery, there is barely any light save a deep red emittance. —Stephanie Elam, CNN, 28 Sep. 2021

Close to 1,500 Amazon purchasers have deemed these outdoor lights a worthy purchase for their al fresco space, raving over their long-lasting durability and warm, white emittance of light. —Isabelle Kagan, USA TODAY, 10 Aug. 2020

Word History

First Known Use

1940, in the meaning defined at sense 1