from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Smoked salmon.
  • n. Liquid oxygen, especially when used as a rocket fuel oxidizer.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. smoked salmon
  • n. liquid oxygen

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a bluish translucent magnetic liquid obtained by compressing gaseous oxygen and then cooling it below its boiling point; used as an oxidizer in rocket propellants
  • n. brine-cured salmon that is lightly smoked


Yiddish laks, from Middle High German lahs, salmon, from Old High German; see laks- in Indo-European roots.
l(iquid) + ox(ygen).
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Yiddish לאַקס (laks, "salmon"), from Old High German lahs. Cognate to Icelandic lax, German Lachs. More at lax. (Wiktionary)
Abbreviation (Wiktionary)



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