The meaning of SOLID is being without an internal cavity. How to use solid in a sentence.

A solid is a substance that stays the same shape whether it is in a container or not. Solids turn to liquids at certain temperatures.

SOLID meaning: 1. hard and firm without holes or spaces, and not liquid or gas: 2. strong and not easily broken…. Learn more.

Without a break or opening; completely or continuously: The theater was booked solid for a month.

Dec 14, 2025 · solid (plural solids) (chemistry) A substance in the fundamental state of matter that retains its size and shape without need of a container (as opposed to a liquid or gas).

A solid, as opposed to a liquid or gas, has a size and shape to it. It doesn't flow like water or disappear into the air.

Physics having relative firmness, coherence of particles, or persistence of form, as matter that is not liquid or gaseous: solid particles suspended in a liquid.

Unlike a gas or liquid, a solid has a fixed shape, and unlike a gas, a solid has a fixed volume. In most solids (with exceptions such as glass), the molecules are arranged in crystal lattices of various sizes.

A solid is a state of matter characterized by its definite shape and volume. It has particles that are closely packed together in a regular arrangement, resulting in little movement and strong …

SOLID definition: 1. hard or firm, keeping a clear shape: 2. completely hard or firm all through an object, or…. Learn more.