Density - English Definition & Meaning

Definition

Density is the measure of how much mass is contained within a given volume. Think of a bowling ball versus a beach ball—the bowling ball has much higher density. It's a ratio of mass to volume. The opposite of density is rarefaction, where something is less packed. It's not just about heaviness, but how much 'stuff' is squeezed into a space. Density helps determine whether objects float or sink. 🧊

Etymology

The word 'density' comes from 'dense,' which is derived from the Latin word 'densus,' meaning 'thick' or 'crowded.' It has been used in English since the 15th century to describe the quality of being closely packed. It has evolved from simply meaning 'thick' to a more precise scientific measurement.

Related Words

Examples

• "The density of the metal made it very heavy and durable."
• "The population density of the city is very high, with many people living in a small area."
• "The scientist measured the density of the liquid to identify it."
• "The density of the wood determined whether it would float or sink in water."

Encouragement

Now you've unlocked 'density'—the measure of mass per volume. Use it to describe metals, populations, or anything that has a measurable mass and volume. Supercharge your science vocabulary! ⚡

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