| 单词 | plus sign |
| 释义 | > as lemmasplus sign plus sign n. the mathematical sign ‘+’; also figurative. ΘΚΠ the world > relative properties > number > mathematical notation or symbol > [noun] > arithmetic or algebraic symbols > addition plus1579 plus sign1826 hyphen1850 1826 Times 20 Oct. 2/3 They, like the plus and minus signs of algebra, when opposed, equal nothing. 1889 G. M. Hopkins Exper. Sci. (1893) xviii. 430 The minus sign (−) is used to designate the negative pole, while the plus sign (+) is used to designate the positive pole. 1914 Indianapolis Star 28 Sept. 3/2 (advt.) The plus sign of public confidence is always attached to the name of a house of business that considers [etc.]. 1972 Sci. Amer. Jan. 83/2 The superscript plus sign denotes a positive ion. 2000 Daily Tel. 16 Mar. (Connected section) 15/2 Click on the plus sign next to CD-Rom, then click on the drive listed. < as lemmas |
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