How to Say "compactness" in Spanish
The Spanish word for “compactness” is “densidad” — B1 level.

Examples
La densidad del aceite es menor que la del agua.
The density of oil is less than that of water.
Esta ciudad tiene una densidad de población muy alta.
This city has a very high population density.
No me gusta la densidad de esta salsa, prefiero algo más ligero.
I don't like the thickness of this sauce; I prefer something lighter.
The '-dad' ending rule
Words ending in '-dad' are almost always feminine in Spanish. Use 'la' and 'una' with this word.
Describing contents
To say what the density refers to, use 'de' followed by the subject, such as 'densidad de tráfico' (traffic density).
Gender confusion
Mistake: “El densidad del aire.”
Correction: La densidad del aire. (Words ending in -dad are feminine.)
Related Translations
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