lu
/luː/
Proposed by a contributor, not yet supported by evidence.
Also seen as: lus
Sense 1
Meaning · English
Synonym of route or circuit, an administrative division of imperial China.
Noun
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).
Sense 2
Meaning · English
A matrix decomposition which writes a matrix as the product of a lower and upper triangular matrix, used in numerical analysis to solve systems of linear equations or find the inverse of a matrix.
Noun
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).
Common questions
What does “lu” mean?
Synonym of route or circuit, an administrative division of imperial China.
Is “lu” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.