a. 波动的, 起伏的

vi. 波动, 起伏, 呈波浪形

vt. 使起伏, 使波动

[医] 波动

Undulate \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}.


Undulate \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.


Undulate \Un"du*late\, v. i.
To move in, or have, undulations or waves; to vibrate; to
wave; as, undulating air.