Longman Dictionary of Contemporary English homepage

solid

2 noun
     
Related topics: Shapes, Patterns, Chemistry, Maths
solid2
1 [countable]HC a firm object or substance that has a fixed shape, not a gas or liquid:
the properties of liquids and solids
2

solids

[plural]DF foods that are not liquid:
He's still too ill to eat solids.
3 [countable] technical the part of a liquid which has the qualities of a solid when it is separated from the solvent (=watery part)
4 [countable] technicalHMCF a shape which has length, width, and height, such as a sphere or cylinder

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