Astro*Dictionary by Michael Erlewine
1 article for "Trimorion"
Trimorion [DeVore]An aspect in Mundo which embraces three Houses, hence a Mundane square, but which in some instances may actually extend to as much as 120°; hence in Primary Directions it was sometimes called the killing arc, since 120 years were deemed the natural limit of life.
See also:
♦ Aspect ♦ Mundane Aspect ♦ House ♦ Primary Directions
Astro*Index Copyright © 1997 Michael Erlewine