pendular,a.|ˈpɛndjʊlə(r)| [f. pendul-um + -ar1.] Of or pertaining to a pendulum; resembling that of a pendulum, as a simple vibration. 1878Mayer Sound 152 A simple sound is only given by a pendular vibration.1881Broadhouse Mus. Acoustics 157 The form of vibration known as ‘pendular’.