Word.ws English Dictionary

SDI

/ɛs diː aɪ/

SDI is the initialism of single-document interface.

SDI is the initialism of Strategic Defense Initiative.

SDI is the initialism of Steel Deck Institute.

SDI is the initialism of Scuba Diving International.

Meaning of Strategic Defense Initiative

Proper noun

the Strategic Defense Initiative

  1. (historical) A system proposed by U.S. President Ronald Reagan on March 23, 1983, to use ground-based and space-based systems to protect the United States from attack by strategic nuclear ballistic missiles.
    Synonyms:
    SDI, Star Wars

Synonyms of SDI

Forms of SDI

pluralSDIs

Questions about SDI

What is SDI the initialism of?
SDI is the initialism of single-document interface.
How do you pronounce SDI?
SDI is pronounced /ɛs diː aɪ/.

Words near SDI in the dictionary

  1. SDGT
  2. SDH
  3. SDHC
  4. SDHC card
  5. SDHC cards
  6. SDI
  7. SDIs
  8. SDIYBT
  9. SDK
  10. SDKs
  11. SDL

Source and license

Adapted from Wiktionary: SDI (page history and authors); Strategic Defense Initiative (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “SDI.” Word.ws, https://word.ws/sdi. Based on Wiktionary, CC BY-SA 4.0.