noun
dhyana-samadhi; meditative concentration
Buddhist term for deep meditative absorption, combining dhyāna (meditation) and samādhi (concentration). Used in Zen and other Buddhist contexts.
禅定に入ることで心の平静を得る。
One attains mental tranquility by entering meditative concentration.
noun
ascetic practice on a sacred mountain (in Shugendō)
In Shugendō, refers to rigorous spiritual training performed on a sacred mountain, often involving meditation and physical endurance.
See also: 修験道
修験道では、山での禅定が重要な修行とされる。
In Shugendō, ascetic practice on the mountain is considered an important training.
noun
Rare, possibly archaic or dialectal use for a mountain summit. Not common in modern standard Japanese.
古い記録に、禅定を「山の頂」の意で使った例がある。
In old records, there are examples where 禅定 is used to mean 'mountain top'.
修験道 is the mountain ascetic tradition itself, while 禅定 in that context refers to the specific practice performed on the mountain.
From Middle Chinese 禪定 (d͡ʑiᴇn deŋH), a Buddhist term translating Sanskrit dhyāna-samādhi. The 'mountain top' sense may be a Japanese semantic extension or a separate homograph.