English to Portuguese Social Sciences Philosophy filosofia da linguagem

Estou traduzindo um texto de teoria da tradução da Maria Tymoczko retirado deste livro: http://books.google.com.br/books?id=zCBSAQAAIAAJ. A autora defende que o conceito de tradução seja considerado um "cluster concept", de forma semelhante a como Wittgenstein trata o conceito de "jogo". Uma explicação clara que encontrei para "cluster concept" foi:

"A cluster concept is one that is defined by a weighted list of criteria, such that no one of these criteria is either necessary or sufficient for membership. Wittgenstein alleged that game was such a concept; some have claimed that species concepts are cluster concepts. [...]
It was at one time pretty commonplace to think that cluster concepts are quite common in science and culture. People say, for instance, that democracy is a cluster concept; Denis Dutton has recently argued that art is a cluster concept. [...]
The classic articulation of this notion was of course Wittgenstein's in Philosophical Investigations I 66: "Consider for example the proceedings that we call 'games'. I mean board-games, card-games, ball-games, Olympic games, and so on. What is common to them all? -- Don't say: "There must be something common, or they would not be called 'games'" -- but look and see whether there is anything in common to all. -- For if you lok at them you will not see something that is common to all, but similarities, relationships, and a whole series of them at that." Some games involve cards, others boards, yet others balls; some involve winning and losing, others (like ring-a-ring-a-roses, or a child bouncing a ball off a wall) do not. "Look at the parts played by skill and luck; and at the difference between skill in chess and skill in tennis." And so on." (http://itisonlyatheory.blogspot.com.br/2010/01/cluster-conce...

Li o texto do Wittgenstein que contém a passagem citada, mas ele não usa o termo "cluster concept". Ele fala em "family resemblance" ("semelhança de família", na tradução brasileira).
Alguém saberia se existe uma tradução consagrada no português para "cluster concept"?

Um dos trechos do texto que estou traduzindo em que aparece o termo é:
"In the first half of this book, I have argued that reconceptualizing the cross-linguistic, cross-cultural, and cross-temporal concept translation as a cluster concept, thus enlarging translation itself, will result in significant benefits for the discipline of translation studies."

Agradeço desde já por toda ajuda.