n.

1. A term that encompasses most all modern progressive rock or metal that places emphasis on time signature modulation and meter as opposed to dynamics, melody, or harmony. "Math rock/metal" encompasses everything from the jazzier leanings of post rock act Slint, to the phrase swapping and odd meters of the Dillinger Escape Plan, and even the hemiola and polyrhythm experiments of bands like Meshuggah and Tool.

2. A term often falsely described as "intelligent music" by people who simply regurgitate what they are told and apparently have no idea how to count.

n. The birth name of somebody who has changed their name. Most commonly attributed to trans people, but can be attributed to any person who has changed their name. (sometimes written as two words: dead name)

v. 1. To call somebody by their deadname.
v. 2. To out somebody's deadname to the public.

A type of Progressive rock or metal. The "math" part of the name comes from the intricate polyrhythms and time signatures. Bands include: Messhugah, Opeth, Tool