a pillar of earthy matter left by erosion of the surrounding ground.
a landform consisting of a column of clay or earth capped and protected from erosion by a boulder
[urth-kweyk] /ˈɜrθˌkweɪk/ noun 1. a series of vibrations induced in the earth’s crust by the abrupt rupture and rebound of rocks in which elastic strain has been slowly accumulating. 2. something that is severely disruptive; upheaval. /ˈɜːθˌkweɪk/ noun 1. a sudden release of energy in the earth’s crust or upper mantle, usually caused by movement […]
noun 1. a civil engineer who studies the effects of seismic activity on structures and consults on earthquake-resistant design and construction.
noun 1. former name of . Abbreviation: ERTS.
[urth-rahyz] /ˈɜrθˌraɪz/ noun, Astronomy. 1. the rising of the above the horizon of the moon or other celestial body, viewed from that body’s surface or from a spacecraft orbiting it. /ˈɜːθˌraɪz/ noun 1. the rising of the earth above the lunar horizon, as seen from a spacecraft emerging from the lunar farside