Definitions
1.verbTo bring into musical accord.
2.verbTo tune (an instrument).
3.verbTo bring into harmony or accord."By meditating, I try to attune myself to the greater cosmos."
4.adjective(of a musical instrument) Tuned to the correct pitch.
5.adjectiveBrought into harmony; harmonized.
6.adjectiveHaving been changed to fit in with a particular context or to be in sync with a phenomenon.