logarithm

Pronunciation

• (US) IPA: /ˈlɑ.ɡə.ɹɪ.ð(ə)m/, /ˈlɑɡəɹ.ɹɪ.ðəm/, /ˈlɑɡ.ə.ɹɪðm/, /ˈlɑɡ.əɹ.ɹɪðm/
• Hyphenation: log‧a‧ri‧thm

Noun

logarithm (plural logarithms)

1. (mathematics) For a number $x$, the power to which a given base number must be raised in order to obtain $x$. Written ${\log }_{b}x$. For example, ${\log }_{10}1000=3$ because ${10}^3=1000$ and ${\log }_{2}16=4$ because $2^4=16$.
   • For a currency which uses denominations of 1, 2, 5, 10, 20, 50, 100, 200, 500, 1000, etc., each jump in the base-10 logarithm from one denomination to the next higher is either 0.3010 or 0.3979.

Anagrams

• algorithm, mithralog