Anthem

On Networking apps like Tinder, Anthem or "My Anthem" means a music track that tells your (User's) story.

The bottom of an ant's pants... according to Brittany S. Pierce

A game developed by BioWare, and produced by EA, release date scheduled February 22, 2019. Possibly a new step forward in gaming as we know it (And by that I mean battle royal games are old and we need something new).

I can't believe nobody has properly explained this.... anyway, "anthem", when used stylistically, means theme. For instance, if a venue, such as a dance club, has a contiguous design feel, it can be said that it sticks to an anthem.
Of course it can also mean a song that is used to convey underlying values, principles, spirit, commraderie, etc., eg. a national anthem.

The term anthemic is not strictly a word, yet is used to describe music that has a particular presence to it/atmospheric feel.

In hardcore/punk an anthemic band would be one who have plentiful singalongs and a tight, melodic, and often heavy rhythm section. Bands such as Bane and With Honor are a good example of this.

1. The most brilliant japanese band ever (Loudness fans, you don't know what you're missing =3)
3. A official song you sing with pride that's mostly patriotic-

A cheesey, cliched, highly known and recognised trance/electronic song.