porismaticadj.

Brit.

/ˌpɔːrᵻzˈmatɪk/,

/ˌpɒrᵻzˈmatɪk/, U.S.

/ˌpɔrəzˈmædɪk/

Origin: A borrowing from Greek, combined with an English element. Etymons: Greek πορισματ- , πόρισμα , -ic suffix.

Etymology: < Hellenistic Greek πορισματ-, πόρισμα porism n. + -ic suffix. Compare earlier porismatical adj., poristic adj.

Mathematics.

Relating to or of the nature of a porism.

ΘΚΠ

the world > relative properties > number > mathematics > [adjective] > relating to mathematical enquiry > of a proposition > of a problem

problematical1570

unlimited1702

poristic1704

porismatic1792

cyclotomic1879

complex1965

1792 J. Playfair in Trans. Royal Soc. Edinb. 3 190 Another species of impossibility may frequently arise from the porismatic case of a problem.

1868 Times 7 Nov. 10/4 At the meeting of the Cambridge Philosophical Society on Monday next communications will be made by the Astronomer Royal..; and by Mr. Clifford on some porismatic problems.

1886 F. W. Farrar Hist. Interpr. vii. 361 The porismatic method consisted in the abstraction of dogmatic results.

1918 Philos. Trans. (Royal Soc.) A. 217 18 These equations..will be found to be of the type known as ‘porismatic’; that is to say, equations which are inconsistent unless the coefficients satisfy a certain relation, and such that, when this relation is satisfied, the equations have an infinite number of solutions.

1944 Obituary Notices of Fellows of Royal Soc. 4 605 Bricard..had studied algebraically in what cases three doubly quadratic equations in three variables may be porismatic.

This entry has been updated (OED Third Edition, December 2006; most recently modified version published online March 2022).

单词	porismatic
释义	porismaticadj. Brit. /ˌpɔːrᵻzˈmatɪk/, /ˌpɒrᵻzˈmatɪk/, U.S. /ˌpɔrəzˈmædɪk/ Origin: A borrowing from Greek, combined with an English element. Etymons: Greek πορισματ- , πόρισμα , -ic suffix. Etymology: < Hellenistic Greek πορισματ-, πόρισμα porism n. + -ic suffix. Compare earlier porismatical adj., poristic adj. Mathematics. Relating to or of the nature of a porism. ΘΚΠ the world > relative properties > number > mathematics > [adjective] > relating to mathematical enquiry > of a proposition > of a problem problematical1570 unlimited1702 poristic1704 porismatic1792 cyclotomic1879 complex1965 1792 J. Playfair in Trans. Royal Soc. Edinb. 3 190 Another species of impossibility may frequently arise from the porismatic case of a problem. 1868 Times 7 Nov. 10/4 At the meeting of the Cambridge Philosophical Society on Monday next communications will be made by the Astronomer Royal..; and by Mr. Clifford on some porismatic problems. 1886 F. W. Farrar Hist. Interpr. vii. 361 The porismatic method consisted in the abstraction of dogmatic results. 1918 Philos. Trans. (Royal Soc.) A. 217 18 These equations..will be found to be of the type known as ‘porismatic’; that is to say, equations which are inconsistent unless the coefficients satisfy a certain relation, and such that, when this relation is satisfied, the equations have an infinite number of solutions. 1944 Obituary Notices of Fellows of Royal Soc. 4 605 Bricard..had studied algebraically in what cases three doubly quadratic equations in three variables may be porismatic. This entry has been updated (OED Third Edition, December 2006; most recently modified version published online March 2022). < adj.1792
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