Un"du*late (?), a. [L. undulatus undulated, wavy, a dim. from unda a wave; cf. AS. , Icel. unnr; perhaps akin to E. water. Cf. Abound, Inundate, Redound, Surround.] Same as Undulated.
© Webster 1913.
Un"du*late (?), v. t. [imp. & p. p. Undulated (?); p. pr. & vb. n. Undulating.] To cause to move backward and forward, or up and down, in undulations or waves; to cause to vibrate.
Breath vocalized, that is, vibrated and undulated.
Holder.
© Webster 1913.
Un"du*late, v. i. To move in, or have, undulations or waves; to vibrate; to wave; as, undulating air.
© Webster 1913. | 
