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

Encyclopedia: Surface brightness

• Tocantins River
• toccata
• Tocharian
• tocology
• tocopherol
• Tocqueville
• tocsin
• tod
• Toda
• today
• Todd
• toddle
• toddler
• toddy
• toddy palm
• Todea
• Todea barbara
• Todea superba
• todger
• Todidae
• Todus
• tody
• toe
• toe box
• toe crack