Topic: PHYSICS
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wave1 S3 W2
1 a line of raised water that moves across the surface of the sea : 
the white crests of the waves
sea
[countable]HEOthe white crests of the waves2 a sudden increase in a particular type of behaviour, activity, or feeling
increase
[countable usually singular]3 a sudden increase in the number of people or things arriving at the same time
people and things
[countable]4 the form in which some types of energy such as light and sound travel ➔ long wave, medium wave, short wave
light and sound
[countable]TPHP5 a movement in which you raise your arm and move your hand from side to side :
signal
[countable usually singular]6 [countable] a feeling or activity that happens again and again in a series :
7 a loose curl in your hair
hair
[countable usually plural]DCB8 to cause problems, especially when you should not : With so many jobs already cut, he didn't want to make waves.
make waves
informalWith so many jobs already cut, he didn't want to make waves.10 [countable usually singular] American English an occasion when many people who are watching an event stand up, move their arms up and down, and sit down again one after another in a continuous movement that looks like a wave moving on the sea [= Mexican wave British English]
