Definition of "intension"

intension

/ɪnˈtɛnʃən/

noun
plural intensions
1. intensity or the act of becoming intense .
  Quotations
  Sounds […] likewise do rise and fall with the intension or remission of the wind.
  1631, Francis [Bacon], “(please specify |century=I to X)”, in Sylua Syluarum: Or A Naturall Historie. In Ten Centuries. […], 3rd edition, London: […] William Rawley; [p]rinted by J[ohn] H[aviland] for William Lee […]
2. (logic, semantics) Any property or quality connoted by a word, phrase or other symbol, contrasted with actual instances in the real world to which the term applies.
  Quotations
  This law is, that the intension of our knowledge is in the inverse ratio of its extension.
  1859–1860, William Hamilton, edited by H[enry] L[ongueville] Mansel and John Veitch, Lectures on Metaphysics and Logic […], volumes (please specify |volume=I to IV), Edinburgh, London: William Blackwood and Sons
3. (dated) A straining, stretching, or bending; the state of being strained.