undulatory adjective. ['ʌndjʊlǝt(ǝ)ri] E18.
[formed as UNDULATOR + -ORY².]
Of undulating motion or form, characterized by undulation; wavy, rippled.
undulatory hypothesis, undulatory theory (obsolete exc. Hist.) the theory that light consists of an undulatory movement of an elastic medium pervading space.

[TahlilGaran] English Dictionary ▲