a. Rising and falling like waves; resembling wave form or motion; undulatory; rolling; wavy; as, an undulating medium; undulating ground. -- Un"du*la`ting*ly. adv. [1913 Webster]
[しょうせつ, shousetsu](n) (1) undulating melodic ornamentation or embellishment, esp. in folk and popular songs; (2) unit of timber measurement#19194[Add to Longdo]