Wordnet 3.0
NOUN (1)
1. 
 an act passed by Congress in 1978 to establish procedures for requesting judicial authorization for foreign intelligence surveillance and to create the Foreign Intelligence Surveillance Court; 
 intended to increase United States counterintelligence; 
 separate from ordinary law enforcement surveillance; 
[syn: Foreign Intelligence Surveillance Act, FISA]
WordNet (r) 3.0 (2006):
Foreign Intelligence Surveillance Act
    n 1: an act passed by Congress in 1978 to establish procedures
         for requesting judicial authorization for foreign
         intelligence surveillance and to create the Foreign
         Intelligence Surveillance Court; intended to increase
         United States counterintelligence; separate from ordinary
         law enforcement surveillance [syn: Foreign Intelligence
         Surveillance Act, FISA]