noun🔗ShareAn instance or act of undulating."The gentle undulation of the wheat field in the breeze was mesmerizing. "naturephysicsgeologyChat with AIVocabulary GamePractice Reading
noun🔗ShareA wavy appearance or outline; waviness."The undulation of the wheat field in the breeze was mesmerizing. "appearancenaturegeologyphysicsChat with AIVocabulary GamePractice Reading
noun🔗ShareA tremulous tone produced by a peculiar pressure of the finger on a string."The guitarist added a subtle undulation to the final note, giving it a beautiful, vibrating quality. "musicsoundsensationstyleChat with AIVocabulary GamePractice Reading
noun🔗ShareA wavelike curve; a smooth and regular rise and fall."The field of wheat showed a beautiful undulation as the wind blew across it. "naturegeographyphysicsappearanceChat with AIVocabulary GamePractice Reading
noun🔗ShareA wavelike motion of the air; electromagnetic radiation."The heat rising from the asphalt created a visible undulation in the air, making the distant cars appear to shimmer. "physicsenergynatureChat with AIVocabulary GamePractice Reading
noun🔗ShareA feeling as if of an undulatory motion about the heart."After the unexpected news, she felt a strange undulation in her chest, like a gentle wave washing over her heart. "physiologysensationmedicinebodyChat with AIVocabulary GamePractice Reading
noun🔗ShareThe distinctive motion of the matter within an abscess on being pressed when it is ripe for opening.""The doctor gently pressed the swollen area, observing the subtle undulation within the abscess to determine if it was ready to be drained." "medicinebodysensationphysiologyChat with AIVocabulary GamePractice Reading
