Available Definitions:
1) a. - Consisting in, or pertaining to, circumstances or particular incidents.
2) a. - Incidental; relating to, but not essential.
3) a. - Abounding with circumstances; detailing or exhibiting all the circumstances; minute; particular.
4) n. - Something incidental to the main subject, but of less importance; opposed to an essential; -- generally in the plural; as, the circumstantials of religion.