concomitant UK /kənˈkɒmɪtənt/US /kənˈkɑmətənt/adjective 2noun 2forms 1 adjective2 •Accompanying; conjoining; attending; concurrent.It has therefore pleased our wise Creator to annex to several objects, and to the ideas which we receive from them, as also to several of our thoughts, a concomitant pleasure, […] — 1689 •Of or relating to the grammatical aspect which expresses that a secondary action is occurring simultaneously to the primary action of the statement. noun2 •Something happening or existing at the same time.A major concomitant of the advent of diesel traction has been a vast increase in the amount of electrical equipment needing overhaul. — 1963 •An invariant homogeneous polynomial in the coefficients of a form, a covariant variable, and a contravariant variable. formsconcomitants