haecceity

haecceity [hɛkˈsiːɪtɪ hiːk-]

n pl -ties

(Philosophy) Philosophy the property that uniquely identifies an object Compare quiddity

[from Medieval Latin haecceitas, literally: thisness, from haec, feminine of hic his]

Thesaurus

Noun

1.

haecceity - the essence that makes something the kind of thing it is and makes it different from any other quiddity essence, heart and soul, inwardness, nitty-gritty, pith, substance, gist, kernel, nub, meat, core, sum, marrow, heart, center, centre - the choicest or most essential or most vital part of some idea or experience; "the gist of the prosecutor's argument"; "the heart and soul of the Republican Party"; "the nub of the story"