What does TEF stand for?

What does TEF mean?

TEF	Toxic Equivalency Factor Miscellaneous » Unclassified
TEF	Toxicity Equivalence Factor Medical » Physiology
TEF	Temporary Enemy Flag Miscellaneous » Unclassified
TEF	Tracheal Esophageal Fistula Medical » Physiology
TEF	Time Energy Frequency Miscellaneous » Unclassified
TEF	The Elite Force Miscellaneous » Unclassified
TEF	Time, Energy, and Frequency Academic & Science » Electronics
TEF	Tailhook Educational Foundation Community » Non-Profit Organizations
TEF	The Elite Fraggers Governmental » Military
TEF	Telfer, Western Australia, Australia Regional » Airport Codes
TEF	Tablet, Effervescent Medical » Physiology
TEF	The Enron Fantasy Business » General
TEF	Relisys TEFAX Fax document Computing » File Extensions
TEF	Telemark Educational Foundation Community » Non-Profit Organizations
TEF	Tranfer Evolution Formalism Miscellaneous » Unclassified
TEF	Telefonica, S. A. American Depositary Receipts Business » NYSE Symbols
TEF	Thermic Effect of Food Medical » Physiology
TEF	Thermic Effect of Food Medical » Laboratory
TEF	Telford Homes Business » London Stock Exchange