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Concrete A hard, strong construction material consisting of sand, conglomerate gravel, pebbles, broken stone, or slag in a mortar or cement matrix. Shown is a house made of concrete. Back to 5000 Word List 52 |
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Concrete A hard, strong construction material consisting of sand, conglomerate gravel, pebbles, broken stone, or slag in a mortar or cement matrix. Shown is a house made of concrete. Back to 5000 Word List 52 |