wave

A2 · Elementary Countable noun

n. a movement of your hand from side to side to say hello or goodbye.

n. a gesture made by moving the hand back and forth, typically as a greeting, farewell, or signal.

“She gave a friendly wave to her neighbor as she drove past his house.”

“He offered a final, lingering wave from the train window as it slowly pulled away from the platform.”

B1 · Intermediate Countable noun

n. a sudden increase in a particular feeling, activity, or type of weather.

n. a sudden, temporary increase or surge in a phenomenon, emotion, or trend.

“A sudden wave of panic hit him when he realized he had lost his passport.”

“The country is currently experiencing a heat wave, with temperatures remaining well above the seasonal average for the third consecutive week.”

B2 · Upper Intermediate Countable noun Science Technical

n. the way that light, sound, or radio signals travel.

n. a periodic disturbance in the energy level of a field or medium, such as sound or electromagnetic radiation.

“Radio waves allow us to transmit music and news over long distances.”

“Physicists study how light behaves both as a particle and as a wave depending on the experimental conditions.”

A2 · Elementary

v. to move your hand from side to side to get someone's attention or say goodbye.

v. to move the hand to and fro in greeting or as a signal; functions as both a transitive and intransitive verb.

“Wave goodbye to your grandmother before we get in the car.”

“The traffic officer waved the waiting cars through the intersection once the pedestrians had safely reached the pavement.”

B1 · Intermediate

v. to move back and forth in the air or wind.

v. to move freely to and fro, especially while attached at one end.

“The national flags were waving proudly in the breeze outside the stadium.”

“Tall grass waved rhythmically across the fields as the summer storm approached from the west.”