Haecceity

//hɛkˈsiː.ə.tiː// noun

Definitions

Noun
  1. 1
    The essence of a particular thing that gives it its unique particularity; those qualities that make an individual this specific individual and not some other. countable, uncountable

    "He [Ignatius of Loyola] ſaith not this of ſome one Church, but of all; nor yet as of an accident proper to thoſe times of the Churches minority; but as of the Notes of every Churches Individuation or Hæcceity as they ſpeak. The Unity of the Church is characteriſed by One Altar, and One Biſhop with the Presbytery and Deacons."

  2. 2
    the essence that makes something the kind of thing it is and makes it different from any other wordnet

Etymology

From Medieval Latin haecceitas (“thisness”) coined by Duns Scotus (from haec (“this, these”)) + -ity.

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