| 单词 | arithmetic |
| 释义 | arithmetic n. & adj. --n 1. a the science of numbers. b one's knowledge of this (have improved my arithmetic). 2. the use of numbers; computation (a problem involving arithmetic). --adj (also arithmetical) of or concerning arithmetic. Phrases and idioms arithmetic mean the central number in an arithmetic progression. arithmetic progression 1. an increase or decrease by a constant quantity (e.g. 1, 2, 3, 4, etc., 9, 7, 5, 3, etc.). 2. a sequence of numbers showing this. Derivatives arithmetician n. Etymology: ME f. OF arismetique f. L arithmetica f. Gk arithmetike (tekhne) art of counting f. arithmos number |
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