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It was the question before if die/dice was regional and ENGVAR applied (that discussion never finished), but now both Merriam-Webster (American English) and Oxford English dictionary (British English) describe dice as singular. OED says "die" is uncommon and MW even gives the possible plural "dices". Clear is that "die" is dated, though perhaps not yet obsolete. Either way I've changed it. Bataaf van Oranje (Prinsgezinde) (talk) 14:00, 4 July 2016 (UTC)
Please don't. Though it may be dismissed as pedantry, the sheer number of sources that use "die" as singular and "dice" as plural is overwhelming when looking at the best quality sources, including the ones used throughout the article. The problem, as always, when defaulting to dictionary listings is they are descriptive based on all sources, while a technical description uses more specific sources. Again, like the ones in the article. When the predominance of sources used in the article use "die" as singular, so should be article itself. Plus there's the fact that the article has been stable with the usage for years. I have reverted your change. oknazevad (talk) 15:36, 4 July 2016 (UTC)
PS, the M-W entry refers to "dices" only in relation to food cut into cubes, not to the analog random number generators this article is about. It also only refers to cubical (six-sided; d6) dice, and ignores polyhedral dice, which make up a significant portion of this article. So, again, I note that it's not a high-quality source for the purposes of this article. oknazevad (talk) 00:07, 6 July 2016 (UTC)
I can't recall ever hearing a person say "a dice". I hear things like "roll the die" when used singularly, never "roll the dice" when referring to a single die. 18.104.22.168 (talk) 03:40, 5 July 2016 (UTC)
Who says "a dice"? Can someone please smack them in the head. With a mace. --Khajidha (talk) 16:34, 26 August 2016 (UTC)
"Sometimes, dice are sold additionally with a die resembling the five Platonic solids, whose faces are regular polygons, or the pentagonal trapezohedron die, whose faces are ten kites, each with two different edge lengths, three different angles, and two different kinds of vertices." How can one die resemble five solids? --Khajidha (talk) 16:41, 26 August 2016 (UTC)