Look up: Logarithm

1. 
   logarithm
   [n] - the exponent required to produce a given number
   Found on http://www.webdictionary.co.uk/definitio
   
   
2. 
   Logarithm
   Allow large number ranges to be expressed over a smaller range of numbers, eg decibel scale. Also, multiplication and division may be expressed as simple addition and subtraction. Invented by Scottish mathematician John Napier in 1614.The power to which a base must be raised to yield a given number, usually abbreviated to;where b is the base. Commo...
   Found on http://www.diracdelta.co.uk/science/sour
   
   
3. 
   Logarithm
   Definition (advanced level) The `logarithm of x to base b ' is what you have to raise b to the power of in order to get x .
   Found on http://thesaurus.maths.org/mmkb/entry.ht
   
   
4. 
   Logarithm
   Log'a·rithm (lŏg'ȧ*rĭ&thlig;'m) noun [ Greek lo`gos word, account, proportion + 'ariqmo`s number: confer French logarithme .] (Math.) One of a class of auxiliary numbers, devised by John Napier, of Merchiston, Scotland (1550-1617), to abridge arithmetical calculations, by the use of addition and subtraction in place of multiplication and divisio ...
   Found on http://www.encyclo.co.uk/webster/L/56
   
   
5. 
   logarithm
   <mathematics> One of a class of auxiliary numbers, devised by John Napier, of Merchiston, Scotland (1550-1617), to abridge arithmetical calculations, by the use of addition and subtraction in place of multiplication and division. ... The relation of logarithms to common numbers is that of numbers in an arithmetical series to corresponding numb ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
6. 
   logarithm
   noun the exponent required to produce a given number
   Found on http://wordnet.princeton.edu/perl/webwn?
   
   
7. 
   Logarithm
   In mathematics, a `logarithm` of a given number to a given base is the power to which you need to raise the base in order to get the number. For example, the logarithm of 1000 to the common base 10 is 3, because 10 raised to a power of 3 is 1000. More formally, the logarithm base `b` of a number `x` is the exponent `y` that satisfies `x` = `b``y`. It is written log`b`(`x`) or, if the base is implicit, as log(`x`). In other words : y=...
   Found on http://en.wikipedia.org/wiki/Logarithm
   
   
8. 
   Logarithm
   • (n.) One of a class of auxiliary numbers, devised by John Napier, of Merchiston, Scotland (1550-1617), to abridge arithmetical calculations, by the use of addition and subtraction in place of multiplication and division.
   Found on http://thinkexist.com/dictionary/meaning
   
   
9. 
   logarithm
   the exponent or power to which a base must be raised to yield a given number. Expressed mathematically, is the logarithm of to the base if = , in ... [6 related articles]
   Found on http://www.britannica.com/eb/a-z/l/66
   
   
10. 
    Logarithm
    A particular mathematical transformation often used to express economic variables. Advantages: 1) If a variable grows at a constant percentage rate over time, the graph of its logarithm is a straight line. 2) A small change in the logarithm of a variable is approximately its percentage change.
    Found on http://www-personal.umich.edu/~alandear/
    
    
11. 
    logarithm
    The logarithm of a number or variable x to base b, log_b x, is the exponent of b needed to give x. The bases most commonly used in mathematics are e and 10. A logarithm to base e, written as log x or ln x, is known as a natural logarithm. A logarithm to base 10 is written as lo...
    Found on http://www.daviddarling.info/encyclopedi
    
    
12. 
    logarithm
    logarithm (log'uri&thstrok;um) [Gr.,=relation number], number associated with a positive number, being the power to which a third number, called the base, must be raised in order to obtain the given positive number. For example, the logarithm of 100 to the base 10 is 2, written log10 100=2, sinc...
    Found on http://www.infoplease.com/ce6/sci/A08301