TDF
TDF most often denotes the Tour de France cycling race, but in tech circles it can mean a tab‑delimited file, while in medical literature it refers to the antiviral Tenofovir disoproxil fumarate or the genetic testis‑determining factor.
Medical
Miscellaneous
Community
Governmental
Test Data Folder
Tactical Digital Facsimile
Total Devastation Forever
Teenage Dope Fiend
Tire Derived Fuel
Regional
Computing
TheDraw Font file
Typeface Definition File
Tab Delimited File
Title Definition Format
Terascan Data Format
Theme Definition File