What does the acronym ELO stand for in the context of chess, as in the ELO rating system?


It doesn't stand for anything at all, because it's not an acronym. It should be "Elo" rather than "ELO." The Elo rating system is named after the Hungarian-American physics professor (and 8-time state champion chess master) Arpad Elo, who originally devised his rating system around 1960.

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    On a side note: There are predecessors to Arpad Elo's system, for example the "Ingo-Zahl" used already in 1947 in Germany. (And still being used by the german xiangqi-players for some reason …) – BlindKungFuMaster Dec 5 '14 at 9:51
  • @BlindKungFuMaster, I'd not heard of that before. Gracias. – ETD Feb 1 '16 at 4:37

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