† secundanadj.n.

Etymology: < Latin secundānus, < secundus second adj.: see -an suffix.

Obsolete.

A. adj.

Pathology. Of a fever: Recurring every second day.

ΘΚΠ

the world > time > period > a day or twenty-four hours > [adjective] > occurring every specific number of days

secundana1400

a1400–50 Stockh. Med. MS 114 Þe fyuere secundan.

B. n. plural.

Mathematics. (See quot. 1704.)

ΘΚΠ

the world > relative properties > number > mathematical number or quantity > numerical arrangement > [noun] > set > sequence > series > infinite

secundan1685

infinite series1706

Taylor('s) series1816

Maclaurin's series1881

power series1884

Fibonacci('s) series1891

Laurent's expansion1893

Fibonacci('s) numbers1914

majorant1925

tetrahedral numbers1939

Fibonacci('s) sequence1964

binomial series1966

1685 Dr. Wallis in Philos. Trans. (Royal Soc.) 15 1200 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.].

1704 J. Harris Lexicon Technicum I Secundans, in Mathematicks, is an infinite series of Numbers, beginning from Nothing, and proceeding as the squares of Numbers in Arithmetical Proportion.

1795 in C. Hutton Math. & Philos. Dict.

This entry has not yet been fully updated (first published 1911; most recently modified version published online September 2021).

单词	secundan
释义	† secundanadj.n. Etymology: < Latin secundānus, < secundus second adj.: see -an suffix. Obsolete. A. adj. Pathology. Of a fever: Recurring every second day. ΘΚΠ the world > time > period > a day or twenty-four hours > [adjective] > occurring every specific number of days secundana1400 a1400–50 Stockh. Med. MS 114 Þe fyuere secundan. B. n. plural. Mathematics. (See quot. 1704.) ΘΚΠ the world > relative properties > number > mathematical number or quantity > numerical arrangement > [noun] > set > sequence > series > infinite secundan1685 infinite series1706 Taylor('s) series1816 Maclaurin's series1881 power series1884 Fibonacci('s) series1891 Laurent's expansion1893 Fibonacci('s) numbers1914 majorant1925 tetrahedral numbers1939 Fibonacci('s) sequence1964 binomial series1966 1685 Dr. Wallis in Philos. Trans. (Royal Soc.) 15 1200 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.]. 1704 J. Harris Lexicon Technicum I Secundans, in Mathematicks, is an infinite series of Numbers, beginning from Nothing, and proceeding as the squares of Numbers in Arithmetical Proportion. 1795 in C. Hutton Math. & Philos. Dict. This entry has not yet been fully updated (first published 1911; most recently modified version published online September 2021). < adj.n.a1400
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