Red Algae

Science / Biology / Red Algae: Common name for the algae placed in the division Rhodophyta.

Red Light

Entertainment / Ice Hockey / Red Light: A light behind the goal cage, next to the green light, that is turned on by the goal judge to indicate that a goal has been scored. MORE

Red Line

Entertainment / Ice Hockey / Red Line: A line, 12 inches wide, that extends across the ice midway between the goal lines. Also known as the center line. MORE

Red Herring

Business / Finance / Red Herring: A preliminary prospectus providing information required by the SEC. It excludes the offering price and the coupon of the new issue. MORE

Red Green Blue (RGB)

Technology / Digital Cameras / Red Green Blue (RGB): The three colors to which the human visual system, digital cameras and many other devices are sensitive. MORE

Red Eye

Entertainment / Photography / Red Eye: Effect encountered when light from a flash unit travels parallel to the lens axis during exposure. MORE

Red Flag

Entertainment / Football / Red Flag: A weighted red marker thrown onto the field by a coach to tell the officials that he wants a certain play reviewed. Sometimes referred to as 'challenge flag.' MORE