From Longman Dictionary of Contemporary EnglishNASANASA /ˈnæsə/ noun PGTTS (National Aeronautics and Space Administration) a US government organization that controls space travel and the scientific study of space
Examples from the Corpus
NASA• But on stage I find it difficult to change the tone quickly - you've got NASA sitting in front of you!• Knowing NASA would have little cash to spare, the committee backed off proposals for new landing craft.• It is not the first time that NASA has had trouble with the upper stage. 