symbatic

English

symbatic (not comparable)

Of or pertaining to a relationship between two related variables where increases or decreases in the value of one also occur in the other.
- 1932, Dorian Feigenbaum, “Note on the Theory of Libidinal Types”, in The Psychoanalytic Quarterly, volume 1, numbers 3–4, →DOI, pages 543–544:
  To use an expression recently introduced in physics, meaning “conformably growing"; “in direct proportion” would be a special instance of a symbatic relationship.