etheric,a.|ˈiːθərɪk| [f. ether + -ic.] Of or pertaining to ether (see ether 5). 1878G. M. Beard in Pop.Sc. Monthly XIII. 331 The ‘etheric force’ of Mr. T. A. Edison was primarily a question of physics.1889Forum (N.Y.) Feb. 662 The mode of vibration of the etheric particles.