What does SIS stand for?

The list of SIS abbreviation meanings.

Stands For|676Abbreviated As|0Related|0

676 entries under topic. ×

4
Secret Intelligence Service(Royal military, Armed Forces, Air Force)
2
Service Interphone System(Aviation, Technology)
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APASmart Define. (2018). sis. Retrieved September 26, 2026, from http://smartdefine.org/sis/abbreviations/f/Aviation
ChicagoSmart Define. 2018. "sis" http://smartdefine.org/sis/abbreviations/f/Aviation (accessed September 26, 2026).
HarvardSmart Define 2018, sis, Smart Define, viewed 26 September, 2026, <http://smartdefine.org/sis/abbreviations/f/Aviation>.
MLASmart Define. "sis" 15 February 2018. Web. 26 September 2026. <http://smartdefine.org/sis/abbreviations/f/Aviation>