Definition

The ability of a material, especially a pigment or dye, to resist fading or discoloration when exposed to light.

Example

Artists often choose paints with high lightfastness to ensure their work remains vibrant over time.

Conversation

Have you ever heard about lightfastness in art supplies?

Yeah, it’s important for ensuring colors don’t fade over time, right?

Exactly! I want to make sure my paintings last as long as possible.

Smart choice! Investing in materials with good lightfastness is definitely worth it.

Synonyms & Antonyms

Root Explanation

Lightfastness is formed from "light" (from Old English "leoht", meaning illumination or brightness) and "fastness" (from Old English "fæst", meaning firm or secure). The term describes the quality of a material to resist fading or discoloration when exposed to light.

Memory Tip

Think of 'light' as brightness and 'fastness' as being secure or firm — lightfastness means being secure against fading in light.

Visually Confused Words