Definition

The quality or state of being bright or shining, often used to describe light or brightness in a scientific context.

Example

The luminosity of the star was measured to determine its distance from Earth.

Conversation

Have you noticed the luminosity of the stars lately?

Yeah, they seem brighter than usual!

I wonder if it's related to the weather changes.

That could be it; clear nights always make them shine more.

Synonyms & Antonyms

Root Explanation

Luminosity → It is formed from "lumen" (meaning light) and the suffix "-osity" (meaning quality or state of). The word "luminosity" refers to the quality or state of being full of light or brightness.

Memory Tip

Think of 'lumen' which means light, and remember that 'luminosity' describes the quality of being bright or full of light.

Visually Confused Words