po·rous sys·tem

/ˈpɔː.rəs ˈsɪs.təm/  noun

1. 1

   A structure whose boundaries admit exchange; a body that lets matter, energy, or ideas pass through.

2. 2

   A way of building that lets the outside in.

3. 3

   A design studio.

from Greek πόρος (póros) — a way through