ETYM Latin solidus, probably akin to sollus whole, entire, Greek: cf. French solide. Related to Consolidate,Soda, Solder, Soldier, Solemn.
1. Acting together as a single undiversified whole; SYN. unanimous.
2. Entirely of a single color throughout; SYN. self-colored, self-coloured.
3. Entirely of one substance with no holes inside.
4. Having three dimensions.
5. Incapable of being seen through.
6. Of definite shape and volume; firm; neither liquid nor gaseous.
7. Of good quality and condition; solidly built; SYN. strong, substantial.
8. Of good substantial quality.
9. Of one substance or character throughout.
10. Turned into or covered with thick ice.
11. Uninterrupted in space; having no gaps or breaks.

In physics, a state of matter that holds its own shape (as opposed to a liquid, which takes up the shape of its container, or a gas, which totally fills its container). According to kinetic theory, the atoms or molecules in a solid are not free to move but merely vibrate about fixed positions, such as those in crystal lattices.
1. A substance that is a solid at room temperature and pressure.
2. A three-dimensional shape.
3. The state in which a substance has no tendency to flow under moderate stress; resists forces (such as compression) that tend to deform it; and retains an definite size and shape; SYN. solidness.

In a solid manner; also; unanimously