Transcendence is the act of rising above something to a superior state. If you were at a concert where the rock star jumped into the audience, the concert (and audience) may have achieved a state of transcendence.
Transcendence comes from the Latin prefix trans-, meaning "beyond," and the word scandare, meaning "to climb." When you achieve transcendence, you have gone beyond ordinary limitations. The word is often used to describe a spiritual or religious state, or a condition of moving beyond physical needs and realities. One way to achieve transcendence spiritually might be to fast for a long time. If you have trouble letting go of material needs, then you will have a difficult time achieving transcendence.