密宗
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Meanings
1
tantrism; esoteric Buddhism
Refers broadly to tantric or esoteric Buddhist traditions, especially those emphasizing secret rituals and teachings.
Esoteric Buddhism is a school of Buddhism that emphasizes secret rituals and teachings.
2
Specifically refers to the Shingon school of Japanese esoteric Buddhism (真言宗).
See also: 真言宗
Kūkai is known as the founder of the Shingon sect of esoteric Buddhism.