Share this entry

haecceity Line breaks: haec|ce¦ity
Pronunciation: /hɛkˈsiːɪti/

Definition of haecceity in English:


[mass noun] Philosophy
1That property or quality of a thing by virtue of which it is unique or describable as ‘this (one)’.
Example sentences
  • For historical reasons, such a property is called a haecceity -- literally, a ‘thisness.’
  • Understanding concepts in his philosophy (eg., faciality, virtuality, haecceity, types of becoming, and rhizome) is important as they provide to entry points into some of the issues under examination.
  • Although it might seem to be a highly fanciful notion, it is hardly more fanciful than some haecceity theories which employ the same distinction, nor perhaps than some possible worlds theories either.
1.1The property of being a unique and individual thing: he has a paramount concern with haecceity, the thisness of things
More example sentences
  • It is the entire assemblage in its individuated aggregate that is a haecceity; it is this assemblage that is defined by a longitude and a latitude, by speeds and affects, independently of forms and subjects, which belong to another plane.
  • There's the haecceity, the isness, the standing reserve, that's one thing: the world.
  • The haecceity of a thing is what makes this particular thing what it is in particular.


Mid 17th century: from medieval Latin haecceitas, from Latin haec, feminine of hic 'this'.

Definition of haecceity in:

Share this entry


What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day exemplum
Pronunciation: ɪɡˈzɛmpləm
an example or model...