quiddity
NounWordNet 3.0
Webster's Dictionary (GCIDE)
Quiddity \Quid"di*ty\, n.; pl. Quiddities. [LL. quidditas, fr. L. quid what, neut. of quis who, akin to E. who: cf. F. quiddit['e].]
1.The essence, nature, or distinctive peculiarity, of a thing; that which answers the question, Quid est? or, What is it? " The degree of nullity and quiddity." --Bacon. [1913 Webster]
The quiddity or characteristic difference of poetry as distinguished from prose.— De Quincey.[1913 Webster]
2.A trifling nicety; a cavil; a quibble. [1913 Webster]
We laugh at the quiddities of those writers now.— Coleridge.[1913 Webster]