define leed

define leed

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You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.
variant spelling of lead:2 3f

LEED (Leadership in Energy and Environmental Design) is the most widely used green building rating system in the world. Available for virtually all building types, LEED provides a framework for healthy, highly efficient, and cost-saving green buildings. LEED certification is a globally recognized symbol of sustainability achievement and leadership.
LEED is for all building types and all building phases including new construction, interior fit outs, operations and maintenance and core and shell. Unsure of which rating system to use? Check out our interactive Discover LEED tool to get started; then, use the rating system selection guidance to make a final decision.

The Leadership in Energy and Environment Design (or LEED) is a third-party certification program by the U. S. Green Building Council that sets the standard for the construction and operation of green buildings. Its goal is to promote the use of green building practices by distinguishing buildings that are designed with the highest levels of sustainability and existing structures that are maintained in a sustainable manner.
LEED was developed in 1993 by Robert K. Watson and included non-profit organizations, government agencies, architects, engineers, and other members of industry and business. The LEED standing committee formulated a consensus on what would be needed for a set standard in green construction. Between 1994 and 2006, LEED expanded their format into six standards that cover all parts of development and construction.

Define leed
Based on its score, a building can receive one of four LEED certifications:
In terms of evaluating and scoring a building’s energy efficiency and environmental or green friendliness, LEED is the most popular scoring system in the world.

References:

http://www.merriam-webster.com/dictionary/leed
http://www.usgbc.org/help/what-leed
http://www.buschsystems.com/resource-center/knowledgeBase/glossary/what-is-leed
http://airfixture.com/glossary/leed-definition
http://www.urbandictionary.com/define.php?term=10-6