一いっ心しん三さん観がん

noun

simultaneous contemplation of the threefold truth

A Tendai Buddhist meditation practice in which one contemplates the three truths (emptiness, provisional existence, and the middle way) simultaneously in a single moment of mind.

See also: 三諦

• 一いっ心しん三さん観がんは天てん台だい宗しゅうの重じゅう要ような瞑めい想そう法ほうです。

  Isshin-sangan is an important meditation method of the Tendai school.