1. (astronomy) luminosity per unit observed area; surface brightness does not depend on the distance at which an object is observed

Encyclopedia: Surface brightness

• gum elemi
• gum eurphorbium
• gum kino
• gum labdanum
• gum myrrh
• gum olibanum
• gum plant
• gum resin
• gum ridge
• gum sangapenum
• gum terpentine
• gum tree
• gum up
• gum-lac
• gum-like
• gumbo
• gumbo soil
• gumbo-limbo
• gumboil
• gumboot
• gumdrop
• gumma
• gummatous
• gummed
• gummed label