† coˈllucent,a.Obs.rare. [ad. L. collūcēntem, pr.pple. of collūcēre, f.col- + lūcēre to shine.] Alight or ablaze together. 1650tr.Caussin's Ang. Peace 4 The flames of collucent cities.1725J. Reynolds View of DeathMem. (1735) 27 The vehement contrition and collision of collucent salts.