 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.
undulated. 1  intransitive verb. 2  1 : to form or move in waves : fluctuate. 3  2 : to rise and fall in volume, pitch, or cadence. 4  3 : to present a wavy appearance. 5  transitive verb. : 6  to cause to move in a wavy, sinuous, or flowing manner.