L1 definition

Mother tongue (someone's native language)
noun
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(astrophysics) First Lagrange point, located further in towards the primary of a system where a smaller object orbits a larger one, in front of the smaller object, inline with a line drawn through the centres of the larger and smaller objects.
initialism
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Other Word Forms

Noun

Singular:
l1
Plural:
l1s

Origin of l1

  • From language 1, meaning "first language."

    From Wiktionary