| Word | Meaning |
| A |
| Armor DigiEggs | Ancient items, created by the Harmonious Ones, that the DigiDestined's Digimon of 02 use to Armor Digivolve. |
| Armor Digivolution | The process of Digivolution through a DigiEgg. |
| B |
| Baby Level | AKA Fresh Level. The first level of a Digimon's growth, reached when hatching from a DigiEgg. |
| Black Gears | Items used by Devimon to infect Digimon, turning them into his slaves. |
| C |
| Champion Level | The fourth level of Digivolution, usually reached through a Digivice. |
| Chrome Digizoid | A type of digital armor some Digimon have. |
| Control Spires | When placed an an area of the Digital World by the Digimon Emperor, Control Spires would stop Digivolution via a Digivice. Control Spires also powered Dark Rings and Spirals. |
| Crests | Ancient Pendents that acted with the Tags and Digivice to Digivolve a Digimon to Ultimate Level. |
| D |
| DigiEgg | An egg that a Digimon hatches out of; not to be confused with an Armor DigiEgg. |
| D-3 | The Digivice used by the DigiDestineds of 02. |
| Dark Digivolution | When a Digimon is pushed too hard to Digivolve, it results in a Dark Digivolution. The newly Digivolved Digimon will be out of control. |
| Dark Masters | Four Mega Level Digimon created by Apocalymon. While the kids were in the real world battling Myotismon, the Dark Masters emerged, taking control of the Digital World. |
| Dark Network | A network created to monitor Etemon's domain. |
| Dark Ocean | This is not only an ocean, but a world. The DigiDestineds refer to this world as the Dark Ocean. Aside from the Dark Ocean, this world houses a beach and foresty area. When Ken was brought to the Dark Ocean, it turned his Digivice into a Dark D-3, and fully activated his Dark Spore, making him the Digimon Emperor when he traveled to the Digital World. Kari was carried to the Dark Ocean from holding her feelings in. She met a group of Divermon, know as "Scubamon", who wanted Kari to free them, and when she did so, they tried to kidnap her. Kari was able to reach out to TK, Patamon, and Gatomon, who came to her rescue. |
| Dark Rings/Spirals | The Dark Rings were made by the Digimon Emperor to enslave the Digimon of the Digital World. The Rings were not strong enough to control Ultimate Level Digimon, so the Emperor created the Dark Spirals, more powerful versions of the Dark Ring. |
| Dark Spores | When Ryo and Ken defeated Millenniummon, Dark Spores were released into the air, infecting Ken. The Spore activated fully when Ken visited the Dark Ocean after his brother died. Ken became the Digimon Emperor, but was freed with the help of the DigiDestined. Some time later, Oikawa was able to make copies of the Spores, infecting other children of the real world. The Spores' power gave Myotismon the ability to release himself from Oikawa's body, reforming as MaloMyotismon. |
| Dark Whirlpool | A whirlpool TK and Pegasusmon were near, where TK felt a presence of evil. The Digimon Emperor confronted Devimon there, using some of his data for Kimeramon. |
| Data Attribute | A Digimon attribute that are usually peaceful. These Digimon usually live to do a job. |
| Data World | A world where Digimon's data is sent after they die. The data is then reconfigured into a DigiEgg. The DigiDestineds and Digimon of 01 found theirselves here after being destroied by Apocalymon. |
| Destiny Stones | The ballance of the Digital World. Once these were destoried by BlackWarGreymon, Oikawa would be able to enter the Digital World. |
| Digi Code | Code written on Holy Rings, swords, ect. |
| DigiDesined | A child who receives a Digivice and a partner Digimon. |
| Digimon | Digital Monsters. |
| Digimon Adventure | Season one of Digimon : Digital Monsters. |
| Digimon Adventure 02 | Season two of Digimon : Digital Monsters. |
| Digimon Analyser | A screen that wuld come up, giving information about a Digimon. |
| Digimon : The Movie | America's movie combining the first three Japanese Digimon movies. |
| Digi Port | Portal from the real world to the Digital World, or vise versa. |
| Digital Barrier | A barrier sent to Izzy by Gennai to make Izzy and his family invisible to the Bakemon who had entered his appartment building. |
| Digital World | The world Digimon live in. |
| Digivice | An item received by a DigiDestined proving their partnership to their partner Digimon. The Digivice can enable a Digimon to Digivolve. |
| Digivolve | Digimon can evolve to their next level of growth, known as Digivolving. |
| DNA Digivolve | When two Digimon's human partners have a good relationship or some sort of connection, the two Digimon are able to Digivolve togather, making one new Digimon. |
| D-Terminal | A communication device commercially made. They are able to store DigiEggs and send emails. |
| E |
| None |
| F |
| File Island | File Island is a small island in the Digital World where Gennai hid the Digivices and DigiEggs for the DigiDestineds to discover. |
| G |
| Gennai | A being, neither human nor Digimon; he was a member over seeing the Digital World. When the conflict between a Greymon and a Parrotmon happened, the group created the Digivices, the Tags, the Crests, and the DigiEggs of the future DigiDestineds partner Digimon. The group picked the 8 DigiDestineds because they had witnessed the battle between Parrotmon and Greymon. The Dark Masters found out about the group's plans, and launched an attack. Everyone was killed except for Gennai who was able to save the DigiEggs and Digivices. Piedmon captured the Tags and Crests. When Gennai was making his escape, he dropped Gatomon's DigiEgg and Kari's Digivice. This is why Kari didn't arrive in the Digital World when the others did. |
| H |
| Harmonious Ones | The four Holy Beasts of the Digital World, who guarde the four directions. |
| Highton View Terrace | An appartment building where the barrior between the Digital World and the real world is weak. Tai and Kari live here. |
| I |
| Infinity Mountian | A mountain in the center of File Island where Devimon's castle was located. |
| In-Training Level | The second level of Digivolution. In-Training Leveled Digimon are still pretty weak. |
| J |
| None |
| K |
| None |
| L |
| None |
| M |
| Mega Level | The highest Level of Digivolution. A Mega Level Digimon may be able to Mode Change, but not Digivolve. There is NO Level past Mega. |
| Mode Change | When a Mega Leveled Digimon has enough power to Digivolve, but with there being no level past Mega, the Digimon cannot Digivolve, so they must Mode Change. A Mode Change Digimon is still a Mega Level Digimon. |
| N |
| None |
| O |
| Odaiba | An area of Tokyo where most of the DigiDestineds live. |
| P |
| Primary Village | When Digimon die, they are sent to the Data World where the are reconfigured into a DigiEgg, and sent to Primary Village, the Digital World's nursery. |
| Q |
| None |
| R |
| Rookie Level | Digimon who are able to substain Rookie Level are usually partner Digimon. This Level is the third Level of Digivolution. |
| S |
| Server | Server was the main continent of the Digital World. Etemon controlled the desert area, while Myotismon controlled the forest area. |
| Spiral Mountain | While the DigiDestineds were in the real world, the Dark Masters reemerged, reformating the Digital World all into a mountain, Spiral Mountain. As the DigiDestineds defeated the Dark Masters, each of their domains returned to normal. |
| T |
| Tag | Created by the group Gennai was apart of, the Tags were captured by the Dark Masters and hidden by Devimon. The kids were able to find them with Whamon's help. The Tags would glow when near their respective Crest. When the Crest, Tag, Digivice, and human partner's emotions were in line, their Digimon would be able to Digivolve to Ultimate Level. |
| U |
| Ultimate Level | The second to last level of Digivolution. |
| V |
| Vaccine Attribute | Vaccine is one of the Attributes of many Digimon. These Digimon are usually ready to fight, and protect the Digital World from Virus Attributed Digimon. |
| Virus Attribute | Virus is one of the Attributes of many Digimon. These Digimon are usually ready to fight, and reck the Digital World. |
| W |
| Warp Digivolve | Warp Digivolving is when a Digimon is able to skip a Level or two of Digivolution, making it straight to Mega Level. |
| X |
| None |
| Y |
| None |
| Z |
| None |
