Struggling to understand some of the words and phrases used in Digimon? The Digictionary explains them! Remember though that these are the english terms, for example "Mega" as we know it was "ultimate" in japan. But so we don't confuse you those won't be added.

Champion (n.)
1: The third form on a Digivolution line, preceded by Rookie and followed by Champion.
2: Any Digimon of this level.

Digivolution (n.)
1: The transformation of one Digimon into another of a higher level.
2: A Digimon directly above the one referenced on the same Digivolution line.

Digivolve (v.)
1: Become another Digimon of a higher level than the current Digimon.

DNA Digivolution (n.)
1: A type of Digivolution where two or more Digimon merge to form one.
2: Any Digimon created as the result of DNA Digivolution.

In-Training (n.)
1: The first level on a Digivolution line, followed by Rookie.
2: Any Digimon of this level.

Mega (n.)
1: The fifth level on a Digivolution line, preceded by Ultimate.
2: Any Digimon of this level.

Rookie (n.)
1: The second form on a Digivolution line, preceded by In-Training and followed by Champion.
2: Any Digimon of this level.

Special Digivolution (n.)
1: A Digivolution to a form not on the Digimon's Digivolve line.
2: A Digivolution which occurs under unusual circumstances.
3: Any Digimon resulting from a Special Digivolution.

Ultimate (n.)
1: The fourth form on a Digivolution line, preceded by Champion and followed by Mega.
2: Any Digimon of this level.