Meanings
nounSDI (plural SDIs)
plural SDIs
- abbreviationinitialismcomputingInitialism of single-document interface.
proper noun
- abbreviationinitialismInitialism of Strategic Defense Initiative.
The new sales pitch for S.D.I. runs smack up against the recommendations of Mr. Reagan's own Commission on Strategic Forces, the panel that so effectively closed the window of vulnerability back in 1983.
1987 August 31, Howard Ris, “Don't Buy the S.D.I. Soap”, in The New York Times, →ISSN, archived from the original on 12 Apr 2022Synonyms: Star Wars
- abbreviationinitialismInitialism of Steel Deck Institute.
- abbreviationinitialismdivingInitialism of Scuba Diving International.
Synonyms & antonyms
Also see
Translations
French IDS
- IDSStrategic Defense Initiative
Russian СОИ
- СОИ (SOI)Strategic Defense Initiative
Spanish IDE
- IDEStrategic Defense Initiative
Rhymes & wordplay
Anagrams
Cite this entry
APA
SDI. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/SDI
MLA
“SDI.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/SDI. Accessed November 5, 2026.
Chicago
WatkinsX Dictionary, s.v. “SDI,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/SDI.
Source: SDI on Wiktionary, CC BY-SA 4.0.