 Summer of '69  is a song recorded by Canadian recording artist Bryan Adams, from his fourth studio album, Reckless (1984). The song was written by Adams and Jim Vallance, a long-time writing partner of Adams.
â¢ UNDULATION (noun). The noun UNDULATION has 3 senses: 1. an undulating curve. 2. wavelike motion; a gentle rising and falling in the manner of waves. 3. (physics) a movement up and down or back and forth. Familiarity information: UNDULATION used as a noun is uncommon.
Historical Examples. 1  On the other side were undulating pasture-lands on which grazed a few sheep. 2  Suddenly the whole face of it was adorned with a verdant, undulating robe. 3  The sun was shining violently upon the undulating surface of the land. 4  Lobate -us: divided by deep, undulating and successive incisions.