What does UDF stand for?

Boise Interagency Fire Center, Boise, ID - OCLC symbol (OCLC)

Federation Guadeloupeenne de l'Union pour la Democratie Francaise - Guadeloupe Federation of the Union for French Democracy - Political party (PPW)

UAV Demonstration Flights (SAUS)

UHF Band Direction Finder - Aviation (PIPO)

Ulster Defence Force

Unducted Fan - Type of prop engine developed by General Electric Co.

Unidentified - Telegraphy (PCTE)

Unidirectional Freezing (SAUS)

Union Defence Force - British

Union Democrata Foral - Spain - Political party (EY)

Union of Democratic Forces - Mauritania - Political party (EY)

Union of Democratic Forces - Bulgaria - Political party

Union pour la Democratie Francaise - Union for French Democracy - French Guiana - Political party (PPW)

Union pour la Democratie Francaise - Union for French Democracy - New Caledonia - Political party (PPW)

Union pour la Democratie Francaise - Union for French Democracy - France - Political party (PPW)

Union pour la Democratie Francaise - Union for French Democracy - Mayotte - Political party (EY)

Union pour la Democratie Francaise - Union for French Democracy - Wallis and Futuna Islands - Political party (EY)

Union pour la Democratie Francaise - Union for French Democracy - Reunion - Political party (PPW)

Uniroyal, Dunlop, and Firestone - Facetious translation of South African political party, United Democratic Front, which suppsedly executed dissenters with burning tires

Unit Data File - Military technology (DDF)

Unit Derating Factor - Electronics (IEEE)

Unit Development Folder (CIST)

Unit Dining Facilities

United Democratic Front - South Africa - Political party (PPW)

United Democratic Front - India - Political party (PPW)

Universal Disc (or Disk) Format (SAUS)

Universal Disk Format

Unkinkable Domestic Flex (SAUS)

UNlT Development Folder (SAUS)

Unshielded Developers Forum (SAUS)

Update File (SAUS)

Upper Decile Frequency (SAUS)

Upside-Down Flipper

User Danger Factor (CIST)

User Data File (SAUS)

User-Defined Function - Computer science

User Defined Functions (MLEX)

Utility and Data Flow (NASA)