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Definition of lox
lox
/lɑːks/
lox
Plural:lox
lox Lexical Profile
CEFR
B2
Grade
7
Tier
2
Usage
Rare
lox Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• noun
1
North American A fillet of brined salmon that may or may not be smoked, traditionally served thinly sliced on a bagel with cream cheese.
Example
"For Sunday brunch, we always order freshly baked bagels with cream cheese, lox, and capers."
2
Liquid oxygen, used primarily as a cryogenic oxidizer in liquid-fueled rocket engines.
Example
"The launch vehicle uses a highly volatile mixture of kerosene and lox to generate the immense thrust required to reach orbit."
Synonyms
View all synonyms for lox• Rhymes for lox
Word Origin & Etymology
The food sense originates from the Yiddish word 'laks' (salmon), tracing back to the Proto-Germanic '*lahsaz'. The aerospace term is an acronym for Liquid OXygen.
Usage Trend
Historical frequency of usage in published text.
180019102020
Data source: Google Books Ngram Viewer
Cite this Entry
Wordmom. (2026). Definition of Lox. In Wordmom Dictionary. Retrieved Oct 16, 2026, from https://wordmom.com/dictionary/lox