1. Luminance: In the world of video and photography, "luma" refers to luminance, which is the perceived brightness of a color. It's often represented as a single value, typically ranging from 0 (black) to 255 (white).
2. A Genus of Plants: "Luma" is also the scientific name for a genus of evergreen trees and shrubs native to South America, particularly Chile and Argentina. The most famous species is *Luma apiculata*, known as "Chilean myrtle" or "Arrayán".
3. A Place Name: "Luma" might also be a place name. There is a town called Luma in the province of Lugo in Spain.
4. A Personal Name: "Luma" can also be a personal name, though it's not very common.
To determine the correct meaning of "luma" in a specific context, you'll need to look at the surrounding text or the situation in which the word is used.