The quality of being correlative or having a mutual, interdependent relationship.
From correlative plus the abstract noun suffix -ity (denoting quality or state). A formal philosophical and scientific term that solidified in academic discourse.
Correlativity is key in chemistry—atoms don't just exist independently, their properties only make sense in relation to other atoms, which is why understanding relationships between elements unlocked the periodic table.
Complete word intelligence in one call. Free tier — 50 lookups/day.