Definitions from Wiktionary (RSS)

▸ noun:  (Internet) Initialism of Rich Site Summary / Really Simple Syndication (“mechanism to follow updates on other websites such as news, music, blogs, etc.”).
▸ noun:  (Internet, deprecated) Initialism of RDF Site Summary.
▸ noun:  (military, nautical, Singapore) Initialism of Republic of Singapore Ship (“prefix of Navy ships belonging to the Republic of Singapore Navy”).
▸ noun:  (Indian politics, Hindutva) Initialism of Rashtriya Swayamsevak Sangh (“Indian nationalist volunteer organization”).
▸ noun:  (aerospace) Initialism of reusable spaceship.
▸ noun:  (medicine) Initialism of rapid response system. [(chiefly medicine) The organisation and implication of a rapid response team in a particular setting.]
▸ noun:  (astronautics) Initialism of range safety system. [(aviation, astronautics) A system that reduces the risk to the public by ensuring flight safety by monitoring the flight paths of missiles and launch vehicles.]
▸ noun:  (statistics) Initialism of residual sum of squares. [(statistics) The sum of the squared residuals between some model and a data set; a measure of how well the model fits with the data.]

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