TIS

Techline Information System
Found on http://www3.sympatico.ca/dhaughey/j1930.htm

TIS

thermal imaging system
Found on http://www.translationdirectory.com/glossaries/glossary262.php

TIS

[cable system] TIS (Thailand-Indonesia-Singapore) is a submarine telecommunications cable system in the South China Sea linking Thailand, Singapore, and Indonesia It has landing points in: It has an initial transmission capacity of 30 Gbit/s, upgradeable to 320 Gbit/s, and a total cable length of approximately 1,100 km. It started operation...
Found on http://en.wikipedia.org/wiki/TIS_(cable_system)

tis

is
Found on http://www.noslang.com/dictionary/t/

TiS

Titanium(II) Sulfide Molar mass: 79.932
Found on http://www.convertunits.com/molarmass/Titanium(II)+Sulfide

TIS

Traction Interlock Switch, isolates the doors-closed interlocking on a DMU/EMU.
Found on http://www.scot-rail.co.uk/page/Glossary
No exact match found