logarithm
noun /ˈlɒɡərɪðəm/
  /ˈlɔːɡərɪðəm/
 (also informal log)
 (mathematics)- any of a series of numbers set out in lists that make it possible to work out problems by adding and subtracting instead of multiplying and dividingWordfinderTopics Maths and measurementc2
- algebra
 - arithmetic
 - calculus
 - equation
 - geometry
 - logarithm
 - maths
 - numeracy
 - problem
 - trigonometry
 
Word Originearly 17th cent.: from modern Latin logarithmus, from Greek logos ‘reckoning, ratio’ + arithmos ‘number’.