lg

Translingual

Etymology

(mathematics and computer science): Abbreviation of Latin logarithmus generalis.

Symbol

lg

1. (computer science) binary logarithm; logarithm to the base 2.

   Synonyms: lb, ld

   ${\displaystyle \lg(x)=\log _{2}(x)}$. ${\displaystyle \lg(2)=1}$

2. (mathematics) base 10 logarithm

   ${\displaystyle \lg(x)=\log _{10}(x)}$. ${\displaystyle \lg(10)=1}$

3. (international standards) ISO 639-1 language code for Luganda.

Usage notes

(mathematics): This symbol, lg, is defined as the base 10 logarithm in the ISO 80000-2:2019 standard, which instead prescribes the symbol lb for the binary logarithm. Despite this, lg is not widely used in English-language literature. Wolfram MathWorld observes that the use of lg for a base 10 logarithm is standard in German and Russian literature.

Related terms

• ln
• log

English

Noun

lg

1. Initialism of landing gear.
2. Initialism of little girl in DD/lg (dd/lg) kink.
   • 2018, Zoe Alderton, The Aesthetics of Self-Harm: The Visual Rhetoric of Online Self-Harm Communities, Routledge, →ISBN, page 82:

     For some, this interest in a Lolita persona feeds into a sexual role-playing game (often called dd/lg, short for Daddy [and] little girl […] The role of the dd is to punish and protect while the lg is charming, needy, mildly disobedient, and in wont of a spanking.

   • 2019, Cassandra Dee, Daddy's Pretty Baby: A DD/lg Forbidden Romance:

     ABOUT THIS BOOK […] Hey Readers – Warning: This is a sexy, over the top romance with two folks engaged in age play and the DD/lg lifestyle.

Anagrams

• Gl, g/l