simple past tense and past participle of undulate

Third-person singular simple present indicative form of undulate

Wavy in appearance or form. / Changing the pitch and volume of one's voice. / (botany, of a margin) sinuous, winding up and down.

(transitive) To cause to move in a wavelike motion. / (transitive) To cause to resemble a wave / (intransitive) To move in wavelike motions. / (intransitive) To appear wavelike.

(botany) In an undulate manner.

(physics) A periodic structure of dipole magnets that generates a low-energy collimated beam of radiation.

plural of undulator

Not dulled; sharp or alert.

(obsolete) undulating

undulatory