The story
Onomatopoeia for a high-gain, distorted palm-muted, low pitch guitar sound; coined by guitarist Fredrik Thordendal (b. 1970) of the Swedish extreme metal band Meshuggah.
Etymology from Wiktionary, CC BY-SA 4.0.
djent
Today it means: A style of progressive heavy metal music characterized by rhythmic and technical complexity, and typically featuring heavily distorted, palm-muted guitar chords, syncopated, downtuned riffs, and polyrhythms alongside virtuoso soloing. Full definition →