bacteriorhodopsin[bak tir′ē ō′rō däp′sin]
bacteriorhodopsin definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a purple protein containing retinal and found in the plasma membrane of certain bacteria (genus Halobacterium): it directly supplies electrochemical energy from sunlight
bacteriorhodopsin definition by American Heritage Dictionary
A purple pigment similar to rhodopsin occurring in the cell membranes of bacteria of the genus Halobacterium that converts sunlight directly into chemical energy.