What is the UI pattern used for managing people in Google+ called?

Question

I've tried to find more info on this particular UI pattern Google+ exposes, and I'm sure I've seen it before, but still, I haven't been able to find references to it.

If you go to the Circles section of Google Plus, you will see, besides the circles, a set of "cards" that represent your friends. You can see that all rows are consistent and that if you resize the browser, the cards will rearrange to maximize the use of the space, making the rest fall down to form new dynamic rows.

What is that UI pattern called?

Answer 1

Your questions seems a bit misleading for me. Is your question about:

1. how the google+ circles layout is called? - there is no UX/UI pattern for this, Google+ introduced the new Circles concept

2. "You can see that all rows are consistent and that if you resize the browser, the cards will rearrange to maximize the use of the space, making the rest fall down to form new dynamic rows." - the answer for this is responsive or fluid layout

Here's an article about Fixed, Responsive or Fluid layouts

Answer 2

I've heard it called a fluid or flexible layout.

Answer 3

the technology you are referring to is called responsive web design. It is the process of using the same html for any screen size and use @media-queries in order to change the size or style of html elements through css.