Somehow I feel unsurprised that a doppelgänger for this website contains references to "medicinal plants".
Now perhaps this is old news, but according to that other site Terra Arcanum means "mysteries of earth". Obviously 'Terra' is 'Earth' so apparently Arcanum means mystery or something similar. Perhaps that cancelled game was Arcanum related after all? Edit: Heh, a quick google search says pretty much the same thing. This subject was probably covered years ago...
Yeah, 'Arcanum'/'Terra', and other words related are latin. If I ever were to envision an Arcanum successor (not that I would yet) I would think something along the lines of: "Obscura" or "Terra Obscura" or even... "of Terra Obscura"
I'm kinda surprised that there was no marijuana flashing from every corner of the page. Eh, not the first time I get disappointed by the Internet.