symbatic
adjective
sym·bat·ic
(ˈ)sim¦batik
of two related variables
: increasing or decreasing together though not necessarily in direct proportion
Word History
Etymology
International Scientific Vocabulary, from Greek symbatikos tending or leading to agreement, from symbat- (verbal stem of symbainein to come to an agreement, from syn- + bainein to walk, come) + -ikos -ic