Definition: The brightness or amount of light that comes from a surface or source.

Example: The luminance of the screen was adjusted to reduce glare.

Definition: To give off light without heat, often in a way that is visible in the dark.

Example: The glow-in-the-dark stars on the ceiling luminesce at night, creating a magical atmosphere.

Definition: The process of producing light without heat, often caused by chemical reactions or other changes in matter.

Example: The glow of the fireflies is a beautiful example of luminescence in nature.

Definition: Able to produce or emit light without heat, often seen in certain materials or organisms.

Example: The luminescent jellyfish glowed in the dark ocean waters.

Definition: Relating to the generation or transmission of light.

Example: The luminiferous waves traveled through the vacuum of space.

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.

Definition: Something that gives off or reflects light, making it bright and easy to see. It can also refer to ideas or writing that are clear and inspiring.

Example: The stars looked luminous against the dark night sky.

Definition: In a way that produces or reflects light; brightly or glowingly.

Example: The stars shone luminously in the night sky.

Definition: The state of being bright or shining, especially in a way that produces light.

Example: The luminousness of the stars made the night sky beautiful.

Definition: A surgical procedure to remove a tumor from the breast while preserving as much surrounding healthy tissue as possible.

Example: After her diagnosis, she decided to undergo a lumpectomy to treat her breast cancer.