mitered

/M AY1 T ER0 D/
verb
  1. 1

    To adorn with a mitre.

  2. 2

    To unite at an angle of 45ยฐ.

Source: https://en.wiktionary.org/wiki/miter, https://en.wiktionary.org/wiki/mitered, https://en.wiktionary.org/wiki/mitre