undulation

About 0.15 uses per million words.

Meaning

1. noun An instance or act of undulating.
2. noun A wavy appearance or outline; waviness.
3. noun A tremulous tone produced by a peculiar pressure of the finger on a string.
4. noun A wavelike curve; a smooth and regular rise and fall.
5. noun A wavelike motion of the air; electromagnetic radiation.
6. noun A feeling as if of an undulatory motion about the heart.
7. noun The distinctive motion of the matter within an abscess on being pressed when it is ripe for opening.

Similar words

wave geoidal geoid volutation wobulation wiggling bobbing billowing wobbling wiggle

Often followed by

of in is and or to that which on

Word family

undulations