SDI Meaning in the Cambridge English Dictionary
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Meaning of “SDI” in the English Dictionary

"SDI" in British English

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SDInoun [U]

uk   us   /ˌes.diːˈaɪ/ (informal Star Wars)
abbreviation for Strategic Defense Initiative: a ​plan to ​defend the US from ​enemynuclearweapons by ​destroying them in ​space
(Definition of SDI from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)
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