logarithm

• n. [数] 対数

ラテン語のlogarithmusから。1610年にスコットランドの数学者ジョン?ネイピアによって作られた造語で、ロゴス（logos）、言葉、思考、割合、論理との語源、アルトモス（arithmos）、数、算術との語源。

logarithm

logarithm: [17] Greek lógos had a remarkably wide spread of meanings, ranging from ‘speech, saying’ to ‘reason, reckoning, calculation’, and ‘ratio’. The more ‘verbal’ end of its spectrum has given English the suffixes -logue and -logy (as in dialogue, tautology, etc), while the ‘reasoning’ component has contributed logic [14] (from the Greek derivative logiké), logistic [17] (from the Greek derivative logistikós ‘of calculation’), and logarithm, coined in the early 17th century by the English mathematician John Napier from Greek logós ‘ratio’ and arithmós ‘number’ (source of English arithmetic [13]).
=> arithmetic, logic, logistic

logarithm (n.)

1610s, Modern Latin logarithmus, coined by Scottish mathematician John Napier (1550-1617), literally "ratio-number," from Greek logos "proportion, ratio, word" (see logos) + arithmos "number" (see arithmetic).

1. The natural logarithm of this ratio is called the logarithmic decrement.

この比率自然対数を対数の減量と呼ぶ。

2.The characteristic of the logarithm 6.3214 is 6.

対数6.3214の最初の数は6.

3である.His first designs were for a machine to calculate such things as logarithm tables.

彼の最初の設計は対数テーブルのようなことを機械のために計算することだった。dd>

4.Returns the logarithm of a specified number in a specified base.

指定された数字の指定された底を使用したときの対数を返します。

5.The fifth day is the logarithm stage for the mycelium growth.

菌糸体成長の5日目は菌糸対数成長段階である。