英和和英

発音

• (英国発音, 米国発音) IPA: /ɪnˈtɹæk.tə.bəl/

形容詞

intractable (comparative more intractable, superlative most intractable)

1. Not tractable; not able to be managed, controlled, governed or directed.
   • 1972, Edsger W. Dijkstra, The Humble Programmer (EWD340):

     And I cannot but expect that this will repeatedly lead to the discovery that an initially intractable problem can be factored after all.

2. (mathematics) (of a mathematical problem) Not able to be solved in polynomial time; too difficult to attempt to solve.
3. Difficult to deal with, solve, or manage. (of a problem)
   • 1988, Robert Jackall, “Chapter 1: Moral Probations, Old and New”, in Moral Mazes: The World of Corporate Managers, Twentieth Anniversary edition, →ISBN, page 12:

     Work—bureaucratic work in particular—poses a series of intractable dilemmas that often demand compromises with traditional moral beliefs.

4. Stubborn; obstinate. (of a person)
5. (medicine) Difficult to treat (of a medical condition).

派生語

• intractability
• intractableness
• intractably

参照

• William Dwight Whitney, Benjamin E[li] Smith, editors (1911), “intractable”, in The Century Dictionary […], New York, N.Y.: The Century Co., →OCLC.
• “intractable”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.