Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

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solid angle an angle formed by three or more planes intersecting in a common point, or formed at the peak of a cone.
solid fuel any of various rocket propellants, combining fuel and oxidizer in a solid storable mass.
solid geometry the branch of geometry dealing with three-dimensional figures and surfaces.
solid rocket any rocket that uses solid fuel.
Solid South formerly, in the United States, the southern states traditionally regarded as solidly supporting the Democratic Party.
solid-state being or using a technology that employs semiconductors and transistors to control the performance of electrical devices. [2 definitions]