密度

1. Origins, structure, and basic meaning

• Structure: 密度 is read as みつど and is a noun for how much matter or how many elements are concentrated within a given space or range.
• Basic usage: A physical property appears in 液体の密度, while closeness of weave appears in 糸の密度が高い.

2. Common pitfalls and similar expressions

• Difference from 濃度
  • 濃度 concerns the proportion or strength of a component in a mixture; 密度 concerns matter or elements per space.
• High and low density
  • Density normally combines with 高い and 低い; for fabric, higher thread density means a tighter weave.