| Acronym | Definition |
|---|
| TSSI➣Temporal Single-System Interpretation (Marxist theory) |
| TSSI➣Time Slot Sequence Integrity |
| TSSI➣Transmitter Signal Strength Indication |
| TSSI➣Tactical and Survival Specialties Inc. (Harrisonburg, VA) |
| TSSI➣Total Solution System Integrator Sdn Bhd. (Selangor Darul Ehsan, Malaysia) |
| TSSI➣Top Secret Special Intelligence |