Definition of oscillatory:
Every sound, being a mark of a particular oscillatory motion, became a mark of everything which, by the laws of dynamics, was known to be inferrible from that motion; and everything which by those same laws was a mark of any oscillatory motion among the particles of an elastic medium, became a mark of the corresponding sound.- "A System Of Logic, Ratiocinative And Inductive (Vol. 1 of 2)", John Stuart Mill.
The spring- cart's oscillatory motion seemed to have entered into their spinal joints; and now that they had come to a halt, their heads continued to wag forward and back as they contemplated the haze of smoke spread, like a blue scarf over the town, and the one long slate roof that rose from it as if to meet them.- "The Delectable Duchy", Arthur Thomas Quiller-Couch.
The shock causing the most damage had at first a kind of oscillatory movement lasting over forty seconds and ending in a general upheaval of the earth; the result being that solid walls, arches, and strongly braced roofs, were broken and severed like pipe- stems.- "Complete Story of the San Francisco Horror", Richard Linthicum Trumbull White Samuel Fallows.