the 64 hexagrams of the I Ching
Refers to the complete set of hexagrams in the I Ching (易経). Used in contexts of divination, Chinese philosophy, and classical studies. The reading ろくじゅうしけ is standard; ろくじゅうしか, ろくじゅうよんけ, and ろくじゅうよんか are less common variants.
See also: 易経
The I Ching contains the 64 hexagrams.
易経 is the classic text itself, while 六十四卦 refers specifically to the set of hexagrams within it.
Standard kanji spelling. The reading ろくじゅうしけ is the most common.
From 六十四 (sixty-four) + 卦 (hexagram). The term is directly descriptive of the number of hexagrams in the I Ching.