Ln

abbr. natural logarithm.
Etymology: mod.L logarithmus naturalis

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symbol

lanthanide

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Symbol, Math.

See natural logarithm.

[l(ogarithm) n(atural)]

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abbrev

(natural) logarithm

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ln.,

1. liaison.

2. loan.

Ln (no period),

lanthanide.

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Mathematics abbr. natural logarithm

Origin:

from modern Latin logarithmus naturalis