How to say "density" in Japanese
Choosing the right word
- 密度みつどnounThe default word for density as a physical property — mass per unit volume — and for how densely things are packed or distributed, as in population or traffic density.
- 濃度のうどnounPrimarily means concentration, the amount of a substance dissolved or contained in a solution or mixture. Its 'density' gloss applies mainly in such contexts; for physical density it is not the word you want.
Use 密度 for physical density (mass per volume, or how tightly things are packed); use 濃度 for concentration of a substance in a solution or mixture, though it can also render 'density' in some contexts.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only
Japanese equivalents
