A period of time between Olympic Games, or a historical period not marked by Olympic celebration.
From Greek 'an-' (without) + 'Olympiad' (the four-year period between Olympic Games). Olympiad comes from ancient Greek references to the games held at Olympia.
Ancient Greeks literally used Olympiads to count years—'This happened in the third year of the 23rd Olympiad'—so an 'anolympiad' is like a time period they didn't recognize as historically important enough to name officially.
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