arenoid 1. Like or similar to sand. 2. Resembling grains of sand. You may see more about the arena, Part 1, from here. You may also see the arena, Part 2, from here. Roman Events: The FULL version of Those about to Die, Index. Other related 'sand' units: amatho-; amm... Found on http://www.wordinfo.info/words/index/info/view_unit/182/