coinstantial

From co- +‎ instantial or co- +‎ instance +‎ -ial.

coinstantial (not comparable)

Co-occurring in a unitary instance; being coinstantiated.
- 1883, Napoleon Bonaparte Wolfe, Startling Facts in Modern Spiritualism‎, retrieved 1 May 2021, page 186:
  The sounds grew louder and louder, passing from one side of the room to the other with increasing celerity, and seemingly coinstantial, until the horn banged and jarred every-where within six feet of the medium, and about two feet from the circle, making almost a continuous dinning racket for a minute or two.
- 2001, Nuel D. Belnap, Michael Perloff, Ming Xu, Facing the Future: Agents and Choices in Our Indeterminist World‎, →ISBN, retrieved 1 May 2021, page 263:
  In Figure 9.2, Q is settled true at m₀ and m₁, and settled false at m₂, all of which are coinstantial.

coincidental (overlapping, but coincidental usually denotes noncausal correlation exclusively, whereas coinstantial can refer to both noncausal and causal relations)

English