When it says "Adjacent" Does it mean diagonals too?

  • I'm sure this is a noob question but I couldn't find it on the wiki.

    Designing my own little reactor, and when things react with other things, it doesn't work on the diagonal right? Like at most, a uranium cell could react with 4 other components (Whether other uranium cells or coolants), and similarly a heating plate can only interact with four things. (A cell/other heating plate-Cooling cells etc.)