Posted in Engineering, Government & Military, Information Technology DISI stands for Direct Injection, Spark Ignition (engine that reduces specific fuel consumption and CO2 emissions) DISI stands for Dipartimento di Informatica e Scienze dell’Informazione (Italian) DISI stands for Direction Informatique et des Systèmes d’Information (French: Directorate for Computer and Information Systems) DISI stands for Dorsal Intercalated Segment Instability DISI