| Abbreviation | Definition |
|---|---|
| BTC | Bridge and Tunnel Crowd |
| BTC | British Technical Council of the Motor & Petroleum Industries |
| BTCD | The Brain Tumor Center at Duke |
| BTCG | Brain Tumor Cooperative Group |
| BTCI | BioPharmaceutical Technology Center Institute |
| BTD | Basic Thermo-Dynamics |
| BTD | Branch on Time of Day |
| BTDA | British Television Distributors Association |
| BTE | Brake Thermal Efficiency |
| BTE | Behind The Ear |
| BTECH | Bachelor of Engineering Technology |
| BTEM | Band-Target Entropy Minimization |
| BTEX | Benzene, Toluene, Ethylbenzene, and Xylenes |
| BTFS | Breast Tumor Frozen Section |
| BTH | Bachelor in Theology |
| BThU | British Thermal Unit |
| BTJ | Branch and Turn Japanese |
| BTL | Below The Line |
| BTM | Business Technology Management |
| BTM | Bone Tissue And Muscle |
| BTM | Blood Temperature Monitor |
| BTMS | Body Temperature Measuring System |
| BTP | Big Time Potential |
| BTP | British Transport Police |
| BTP | Biotechnology Training Programs |
| BTP | Billing Transformation Program |
| BTR | Bit Test and Reset |
| BTR | Biceps Tendon Reflex |
| BTRN | Best Tunes on the Radio Now |
| BTS | Bachelors in Tourism Science |
| BTS | Bachelor in Tourism Studies |
| BTS | Bayesian Teaching Strategy |
| BTS | Bit Test and Set |
| BTS | Bureau of Transportation Statistics |
| BTS | Blood Transfusion Service |
| BTT | Bridge To Transplant |
| BTU | British Thermal Unit |
| BTU | Basic Temperature Unit |
| BTU | Baptist Training Union |
| BTV | Blue Tongue Virus |
| BTV | Binghamton Television |
| BTVS | Buffy The Vampire Slayer |
| BTW | Block Transfer Write |
| BTW | Breast Test Wales |
| BTW | Board Test Workshop |
| BU | Base Unit |
| BUA | Blood Uric Acid |
| BUD | Big Ugly Dog |
| BUDG | BUDGet |
| BUDS | Back- Up Digital System |