IPA: /ɪnˈtɛnʃənl/
KK: /ɪnˈtɛnʃənl/
Relating to the concept or meaning of a word or expression, rather than its actual reference or extension.
The intension of the term 'dog' includes characteristics like being a mammal and a pet.
Intensional is formed from "intention" (from Latin "intentio", meaning stretching out or purpose) and the suffix "-al" (meaning relating to). The word "intensional" refers to something that relates to or is characterized by intention or purpose.
Think of 'intention' as a purpose or goal, and remember that 'intensional' means relating to that purpose.