solid
sol·id / ˈsälid/ • adj. (-id·er, -id·est) 1. firm and stable in shape; not liquid or fluid: the stream was frozen solid solid fuels. ∎ strongly built or made of strong materials; not flimsy or slender: a solid door with good, secure locks. ∎ having three dimensions: a solid figure with six plane faces. ∎ concerned with objects having three dimensions: solid geometry.2. not hollow or containing spaces or gaps: a sculpture made out of solid rock a solid mass of flowers the stores were packed solid. ∎ consisting of the same substance throughout: solid silver cutlery. ∎ (of typesetting) without extra space between the lines of characters. ∎ (of a line or surface) without spaces; unbroken: the solid outline encloses the area within which we measured. ∎ (of time) uninterrupted; continuous: a solid day of meetings | it poured for two hours solid. 3. dependable; reliable: the defense is solid there is solid evidence of lower inflation. ∎ sound but without any special qualities or flair: the rest of the acting is solid. ∎ unanimous or undivided: they received solid support from their teammates. ∎ financially sound: the company is very solid and will come through the current recession. ∎ (solid with) inf. on good terms with: he thought he could put himself in solid with you by criticizing her.• n. a substance or object that is solid rather than liquid or fluid. ∎ (solids) food that is not liquid: she drinks only milk and rarely eats solids. ∎ Geom. a body or geometric figure having three dimensions.DERIVATIVES: sol·id·ly adv.sol·id·ness n.
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Also sb. XV. So solidarity XIX. — F. solidarité. solidity XVI.