For a half-century or more, there has been no question about whose name would top any list of the "Most Influential Evangelicals in America."

Conservatives at Newsmax have produced just such a list for 2017 and, sure enough, the Rev. Billy Graham was No. 1. At 99 years of age, he remains the patriarch of conservative Protestantism, even while living quietly in the family's log-home in the North Carolina mountains. For many, the world's most famous evangelist is the living definition of the word "evangelical."

However, the 100-person Newsmax list also demonstrates that no one really knows what the word "evangelical" means, these days. Should it be defined in terms of political clout, religious doctrines or mass-media popularity?

The rest of the Top 10, for example, includes Graham's son Franklin, prosperity gospel superstar Joel Osteen, talk-show politico Mike Huckabee, religious broadcaster Pat Robertson, Rick "Purpose Driven Life" Warren, Liberty University President Jerry Falwell, Jr., TV host Joyce Meyer, Vice President Mike Pence and the duo of Mark Burnett and Roma Downey, religious entertainment mavens in Hollywood.

Disputes about the meaning of "evangelical" are so sharp that "several people on this list would not even agree that some other people on the list are 'Christians,' let alone 'evangelicals' as defined by any set of core doctrines," said historian Thomas Kidd of Baylor University, whose research includes work on American religious movements, including the roots of evangelicalism.

Making this Top 100 list, he added, seems to be linked to "some kind of prominent position in media or politics or both," as opposed to "leading successful churches or Christian organizations. … I would imagine all these people believe that Jesus is the Son of God and they may even share some ideas about the authority of scripture -- but that's about it."