Worship is the proper response of all moral, sentient beings to God,
ascribing all honour and worth to their Creator-God
precisely because he is worthy,
This side of the Fall,
human worship of God properly responds to
the redemptive provisions that God has graciously made.
While all true worship is God-centered,
Christian worship is no less Christ-centered.
Empowered by the Spirit
and in line with the stipulations of the new covenant,
it manifests itself in all our living,
finding its impulse in the gospel,
which restores our relationship with our Redeemer-God
and therefore also with our fellow image-bearers,
Such worship therefore manifests itself
both in adoration and in action,
both in the individual believer and in corporate worship,
which is worship offered up in the context of the body of believers,
who strive to align all the forms of their devout ascription of all worth to God with the panoply of the new covenant mandates and examples that bring to fulfillment
the glories of the antecedent revelation and anticipate the consummation.”
D. A. Carson and M. Ashton, R. K. Hughes, and T. J. Keller, Worship by the Book (Grand Rapids, MI: Zondervan, 2002), 26. Now with a definition like that you don't even need to buy the book! jk - it's worth a read.