J.P. MorelandJ.P. Moreland has probably given the best definition of apologetics I have ever come across.  He defined apologetics as “a ministry designed to help unbelievers to overcome intellectual obstacles to conversion and believers to remove doubts that hinder spiritual growth.”—Love Your God With All Your Mind, 131.

The only thing I might change in this definition is his labeling of apologetics as a “ministry.”  Indeed, it is a ministry, but that term connotes that it is only for some people in the body of Christ.  Biblically speaking, however, apologetics is no more a ministry in this sense than is prayer—both are basic to the Christian life.  I would prefer, then, to define apologetics as a “discipline.”