¦ adjective (solider, solidest)
1. firm and stable in shape; not liquid or fluid: solid fuel.
strongly built or made.
2. Geometry three-dimensional.
relating to three-dimensional objects.
3. not hollow or having spaces or gaps.
consisting of the same substance throughout.
(of time) continuous.
4. dependable; reliable.
sound but without special qualities.
5. (solid with) US informal on good terms with.
6. Austral. informal severe; unfair.
¦ noun
1. a solid substance or object.
(solids) food that is not liquid.
2. Geometry a three-dimensional body or geometric figure.
Derivatives
solidity noun
solidly adverb
solidness noun
Origin
ME: from L. solidus; related to salvus 'safe' and sollus 'entire'.