illuminance[i lo̵̅o̅′mə nəns]
illuminance 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.
illumination (sense )
illuminance definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
illuminance - Science Definition
The luminous flux per unit area at any point on a surface exposed to incident light. It is measured in luxes. Also called illumination.