emissivity.

A surface’s effectiveness at emitting thermal radiation compared with an ideal blackbody under matching conditions.

Use it for

Words that belong together

• surface emissivity
• low emissivity

On the page

The coating changed the panel’s emissivity.

Low emissivity complicated the infrared measurement.

Usage notes

Primary category: sci-fi. Forms: Usually uncountable. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings.