NSSL en · NOUN Meanings (US, abbreviation, alt-of, initialism) Initialism of national security spacelaunch; a high security spacelaunch of U.S. government payloads, such as spy satellites alt of national security spacelaunch Forms SpellingFeaturesLabelsSource NSSLs Number=Plur lexicographic
NSSL en · PROPN Meanings (US, abbreviation, alt-of, initialism) Initialism of National Security Space Launch program; a U.S. government program for assured access to space alt of National Security Space Launch program Coordinates EELV