| 释义 |
† seˈcundan, a. and n. Obs.
[ad. L. secundānus, f. secund-us second a.: see -an.]
A. adj. Path. Of a fever: Recurring every second day.
a1400–50Stockh. Med. MS. 114 Þe fyuere secundan.
B. n. in pl. Math. (See quot. 1704.)
a1703Wallis in Misc. Curiosa (1708) II. 17 And because the first Member doth represent a Series of Equals; the second of Secundans; the third, of Quartans, &c. Therefore the first Member is to be multiplied by S; the second, by 1/3 S; the third by 1/5 S [etc.]. 1704J. Harris Lex. Techn. I, Secundans, in Mathematicks, is an infinite series of Numbers, beginning from Nothing, and proceeding as the squares of Numbers in Arithmetical Proportion. 1795in Hutton Math. Dict. |