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lox1

[loks]
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noun
  1. a kind of brine-cured salmon, having either a salt cure (Scandinavian lox) or a sugar cure (Nova Scotia lox), often eaten with cream cheese on a bagel.
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Origin of lox1

1940–45; < Yiddish laks salmon; compare Middle High German, Old High German lahs, cognate with Old English leax, Old Norse lax

lox2

or LOX

[loks]
noun
  1. liquid oxygen.
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Origin of lox2

1920–25; l(iquid) ox(ygen)

liquid oxygen

noun
  1. a clear, pale blue liquid obtained by compressing oxygen and then cooling it below its boiling point: used chiefly as an oxidizer in liquid rocket propellants.
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Origin of liquid oxygen

First recorded in 1875–80
Also called lox, LOX
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for lox

lox1

noun
  1. a kind of smoked salmon
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Word Origin

C19: from Yiddish laks, from Middle High German lahs salmon

lox2

noun
  1. short for liquid oxygen, esp when used as an oxidizer for rocket fuels
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liquid oxygen

noun
  1. the clear pale blue liquid state of oxygen produced by liquefying air and allowing the nitrogen to evaporate: used in rocket fuelsAlso called: lox
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for lox

n.

1934, American English, from Yiddish laks, from Middle High German lahs "salmon," from Proto-Germanic *lakhs-, from the common IE root for the fish, *laks- (cf. Lithuanian laszisza, Russian losos, Polish łosoś "salmon").

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Online Etymology Dictionary, © 2010 Douglas Harper