Plural of asphalt; multiple types or samples of the dark, sticky substance used to pave roads and surfaces, or to treat or coat with asphalt.
Plural of 'asphalt,' which comes from Greek 'asphaltos' (a paving stone or asphalt). The word may derive from roots meaning 'not falling' or 'stable,' reflecting its use as a secure paving material.
Ancient Romans used natural asphalt from the Dead Sea region to waterproof their structures and bind roads—it's one of humanity's oldest engineered materials! Modern asphalt is a carefully engineered mix of petroleum bitumen and crushed stone, but the concept is ancient.
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