RIS

Rail Interface System
Found on http://www.translationdirectory.com/glossaries/glossary262.php

Ris

• (n.) A bough or branch; a twig.
Found on http://thinkexist.com/dictionary/meaning/ris/

RIS

[file format] RIS is a standardized tag format developed by Research Information Systems, Incorporated (the format name refers to the company) to enable citation programs to exchange data. It is supported by a number of reference managers. Many digital libraries, like IEEE Xplore, Scopus, the ACM Portal, Scopemed, ScienceDirect, and Springe...
Found on http://en.wikipedia.org/wiki/RIS_(file_format)

Ris

Ris noun [ Anglo-Saxon hrīs ; akin to Dutch rils , German reis , Old High German hrīs .] A bough or branch; a twig. [ Obsolete] « As white as is the blossom upon the ris Chaucer.
Found on http://www.encyclo.co.uk/webster/R/85

RIS

acronym: reflector in space (laser beam adsorption, measures O3, CFCs, etc.)
Found on http://cdiac.ornl.gov/pns/acronyms.html#R

RIS

acronym: retroreflector in space
Found on http://cdiac.ornl.gov/pns/acronyms.html#R

RIS

Radiology Information System
Found on http://www.encyclo.co.uk/local/20895

RIS

Rangelands Information System (previous name of RKMIS).
Found on http://www.ifad.org/lrkm/glossary.htm

RIS

Remote Installation Services, details ...
Found on http://www.cryer.co.uk/glossary/r/index.htm

RIS

Rig Instrumentation System
Found on http://www.iodp.org/acronyms/

RIS

Russian imperial stout
Found on http://www.thehomebrewforum.co.uk/glossary.php
No exact match found