Sui generis

Sui Generis definition:
Latin: of its own kind.
Something which is distinct and forms a unique class; the only one of its kind- one of a kind; without parallel.

Sui generis
The Latin term "Sui generis " means, in a UK legal context: "unique".
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(n)Sui generis is defined as the event, situation, action material, person, entity or any such things which are clearly ascertainable and are unique of its kind. For example Eiffel Towers is Sui generis. Man eating humans are Sui generis.

sui generis
(sooh-ee jen-ur-iss) n. Latin for "one of a kind," unique.

But this is a case sui generis. Co. Lit. §273; 1 Serg. & R. 426. Of the yearly value of properties; at the time of partition. Tho. Co. Lit. 820. Of a bequest of so pieces of coin; at the time of the will made. Godolph, 0. L.

There are also more specialized varieties of "sui generis" exclusive rights, such as circuit design rights (called mask work rights in USA law, protected under the Integrated Circuit Topography Act in Canadian law, ...

See also: Term, Thing, Law, Will, Person