| 释义 |
WordReference Random House Learner's Dictionary of American English © 2024log•a•rithm /ˈlɔgəˌrɪðəm, ˈlɑgə-/USA pronunciation n. [countable]- Mathematicsthe exponent of the power to which a base number must be raised to equal a given number;
log:2 is the logarithm of 100 to the base 10 (2 = log10 100).
log•a•rith•mic, adj. See -log-. WordReference Random House Unabridged Dictionary of American English © 2024log•a•rithm (lô′gə riᵺ′əm, -rith′-, log′ə-),USA pronunciation n. [Math.]- Mathematicsthe exponent of the power to which a base number must be raised to equal a given number;
log:2 is the logarithm of 100 to the base 10 (2 = log10 100).
- Greek lóg(os) log- + arithmós number; see arithmetic
- Neo-Latin logarithmus
- 1605–15
Collins Concise English Dictionary © HarperCollins Publishers:: logarithm /ˈlɒɡəˌrɪðəm/ n - the exponent indicating the power to which a fixed number, the base, must be raised to obtain a given number or variable. It is used esp to simplify multiplication and division: if ax = M, then the logarithm of M to the base a (written logaM) is x
Often shortened to: log
See also natural logarithm
Etymology: 17th Century: from New Latin logarithmus, coined 1614 by John Napier, from Greek logos ratio, reckoning + arithmos number |