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Definition of: undulation
(un′dyə·lā′shən, -də-) noun
1. The act of undulating; a waving or sinuous motion; a wave.
2. An appearance as of waves; a gentle rise and fall.
3. Physics The continuous propagation of waves through a medium.
—un′du·la·to′ry (-lə·tôr′ē, -tō′rē) adjective
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