| 单词 | rounding |
| 释义 | rounding /rown"ding/, adj. 1. round or nearly round. 2. of, pertaining to, or used for making something round. 3. turning, curving, or circling around. 4. pertaining to the mathematical process of rounding: a rounding error. n. 5. the act or process of making something round. 6. Math. a. the process of replacing a number by another number of approximately the same value but having fewer digits: To the nearest dollar, the rounding of $27.68 yields $28. b. a similar process that specifies one of various rules. Generally, the number is first truncated to one or two digits more than is desired; then the last one or two digits are adjusted in a specified way in order to reflect the magnitude of the original number. In rounding the final digits, 0-4 are simply dropped, 6-9 are dropped after the preceding digit is increased by 1, and 5 is handled in various ways depending on the surrounding digits and the particular convention being followed. Cf. truncate (def. 2). [1545-55; ROUND1 + -ING2, -ING1] |
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