http://antoniocsjr.blogspot.com.br/2012/06/principio-da-cind...

A cindibilidade consiste na possibilidade e fazer apenas o registro de parte dos objetos constantes do título seja porque existe uma nulidade parcial que permite a separação, ou porque houve pedido expresso da parte interessada, isto é, é possível a separação do título (o que comporta registro), colocando de lado o que não pode ser registrado.

http://real-estate-law.freeadvice.com/real-estate-law/real-e...

https://en.wikipedia.org/wiki/Partition_(law)

A partition is a term used in the law of real property to describe an act, by a court order or otherwise, to divide up a concurrent estate into separate portions representing the proportionate interests of the tenants. Under the common law, any tenant who owns an undivided concurrent interest in land can seek such a division. In some cases, the parties agree to a specific division of the land; if they are unable to do so, the court will determine an appropriate division. A sole owner, or several owners, of a piece of land may partition its/their land by entering a Deed poll (sometimes referred to as "carving out").

I have not found an exact equivalent in English. However, the concept seems fairly clear from Internet research. It derives from Brazilian Federal Law no. 6.015/73. The "matrícula" (title) of a property can be split into two or more titles if necessary, to overcome a restriction on transferring the original title entirely, at the discretion of the registrar. An example I saw: an heir cannot afford to pay the taxes on transfer of a title deed that includes 10 houses. He can only afford the tax on 3 of them. The registrar can create a new title for the three properties and transfer them.

Portuguese term (edited): princípio da cindibilidade registrária

The regsitration needs to go in since the phrase rises the spectre of severability in Anglo-Am Eng. Common Law and meaning 'the blue pencil test', namely striking invalid clauses from otherwise valid contracts.