| Definition | |
| Type: | EP |
| Artist: | Diaura |
| Cover: | Definition (Diaura EP).png |
| Released: | February 13, 2019 |
| Language: | Japanese |
| Label: | NDG |
| Prev Title: | Versus |
| Prev Year: | 2017 |
Definition is the fourth mini album by Japanese visual kei band Diaura, released on 13 February 2019, by NDG.[1] [2] [3] It debuted on Oricon's weekly chart at the 43rd place,[4] and was 6th on the Indies chart.[5] On October 24, 2018, a single titled "Malice" was released off the album.[6] A music video was made for the song "".
Definition discusses the existence of humanity, what humanity is, and thus was released in two versions, with two different covers: one with the theme "organic" and the other being "mechanic". Type A features a human being on the cover being eroded by technology, while Type B depicts an AI robot. The two types begin with two different songs, "ivy" and "Phantom", respectively, which discuss the "illusion of humanity" from different perspectives.