undulation

Definition of Undulation in English :

1. undulation, wave

an undulating curve

2. undulation

wavelike motion; a gentle rising and falling in the manner of waves

3. undulation, wave

(physics) a movement up and down or back and forth

WordNet Lexical Database for English. Princeton University. 2010.

Undulation

noun

1.

the act or an instance of undulating

2.

any wave or wavelike form, line, etc

noun

1.

a.

the act of undulating

b.

an undulating motion, as of a snake

2.

a wavy, curving form or outline, esp. one of a series

3. Physics

wave motion, as of light or sound, or a wave or vibration

n.

1. A regular rising and falling or movement to alternating sides; movement in waves.

2. A wavelike form, outline, or appearance.

3. One of a series of waves or wavelike segments.