Dictionary

Self-referential; structured analogously, but at a higher level.

Example: Suppose you have a genie that grants you three wishes. If you wish for infinite wishes, that is a meta wish.

Boundary marker.

Either of the conical columns at each end of an Ancient Roman circus.

Metagame; the most effective tactics and strategies used in a competitive video game.

Prominent in the metagame; effective and frequently used in competitive gameplay.

Example: I don't think the character will be meta even with the recent buffs.

Metoidioplasty.