Biography Read More. Barret Eugene Hansen (born April 2, 1941), better known as Dr. Demento, is a radio broadcaster and record collector specializing in novelty songs, comedy, and strange or unusual recordings dating from the early days of phonograph records to the present.
Learner's definition of CONVALESCENT. 1. : going through the process of becoming well again after an illness or injury. the convalescent stage of his treatment. The nurse tended to the convalescent patients/soldiers.
Lumen: A luminous term referring to the channel within a tube such as a blood vessel or to the cavity within a hollow organ such as the intestine. Lumen is a luminous term because it is Latin for light, including the light that comes through a window. When a hollow organ is cut across, you can see light through the space that has been opened. So the word lumen came to mean this space.