undulatory

[ uhn-juh-luh-tawr-ee, -tohr-ee, uhn-dyuh-, -duh- ]

/ ˈʌn dʒə ləˌtɔr i, -ˌtoʊr i, ˈʌn dyə-, -də- /

Also un·du·lar. moving in undulations.

having the form or appearance of waves.

Also un·du·la·tive

[uhn-juh-ley-tiv, uhn-dyuh-, -duh-] /ˈʌn dʒəˌleɪ tɪv, ˈʌn dyə-, -də-/.

Origin of undulatory

First recorded in 1720–30; undulate + -ory¹

non·un·du·la·to·ry, adjective

This emission theory of light was abandoned in favour of Huygens' undulatory theory.

The Mechanism of Life |Stphane Leduc
According to the undulatory theory, light is thus refracted.

Six Lectures on Light |John Tyndall
An earthquake is a vertical vibration, having an undulatory progression.

The Andes and the Amazon |James Orton
What pitch is to the ear in acoustics, colour is to the eye in the undulatory theory of light.

Six Lectures on Light |John Tyndall

That undulatory cadence is entirely lacking in landsmen's tones.

A Republic Without a President and Other Stories |Herbert Ward

undulatory

/ (ˈʌndjʊlətərɪ, -trɪ) /

caused by or characterized by waves or undulations

having a wavelike motion or form