Wordnet 3.0
NOUN (1)
1. 
 Canada's main foreign intelligence agency that gathers and analyzes information to provide security intelligence for the Canadian government; 
[syn: Canadian Security Intelligence Service, CSIS]
WordNet (r) 3.0 (2006):
CSIS
    n 1: Canada's main foreign intelligence agency that gathers and
         analyzes information to provide security intelligence for
         the Canadian government [syn: Canadian Security
         Intelligence Service, CSIS]
V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):
CSIS
       Central Schengen Information Systen (SIS, Europe, Strasbourg)