asteroid

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as·ter·oid / ˈastəˌroid/ • n. a small rocky body orbiting the sun. Large numbers of these, ranging in size from nearly 600 miles (1,000 km) across to dust particles, are found (as the asteroid belt) esp. between the orbits of Mars and Jupiter.DERIVATIVES: as·ter·oi·dal / ˌastəˈroidl/ adj.

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