Myoho is the translation of the Sanskrit term Saddharma. … Sad or sat of Saddharma corresponds to the first syllable Myo of Myoho and indicates truth. Saddharma, therefore, signifies the true or correct Dharma. Sad also denotes completeness, being perfectly endowed and comprehensive. Myo further possesses the meaning of unparalleled, mystical, impossible to perceive (with our six senses), as well as impossible to fathom (by ordinary human beings), marvelous and wonderful. Nichiren Shonin pointed out that while Myoho Renge Kyo is the heart and essence of the Lotus Sutra, the word Myo in itself is extremely rich and profound in meaning.
Odaimoku: The Significance Of Chanting Namu Myoho Renge Kyo