Englishfor English speakers
density
Noun
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Density is how much stuff fits in a particular area.
The population density of Singapore is one of the highest in the world.
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The density of a material is how closely packed its atoms are.
The density of water is higher than the density of steam.
of
Preposition
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Made using.
It is a house of cards.
seam
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noun
joint consisting of a line formed by joining two pieces
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noun
(= bed)
a stratum of ore or coal thick enough to be mined with profit
he worked in the coal beds
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verb
put together with a seam
seam a dress
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noun
(= wrinkle, line)
a slight depression in the smoothness of a surface
his face has many lines
ironing gets rid of most wrinkles