 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.
A formation of forces, landing ships, craft, amphibious vehicles or aircraft, required to beach or land about the same time. Can be classified as to type, function or order as shown: a. assault wave; b. boat wave; c. helicopter wave; d. numbered wave; e. on-call wave; f. scheduled wave. 2. (DOD only) An undulation of water caused by the progressive movement of energy from point to point along the surface of the water.