Last Updated：2025/11/30

(uncountable) resistance to expansion and contraction by a fluid / (countable) the measure of such

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bulk viscosity

Source Word

bulk viscosity

uncountable countable

(uncountable) resistance to expansion and contraction by a fluid / (countable) the measure of such

Japanese Meaning

流体が膨張または収縮する際の内的抵抗力、あるいはその抵抗性を示す物理量。通常、体積粘性係数として知られる。

Bulk viscosity plays a crucial role in damping sound waves traveling through a gas.

流体の膨張と収縮に対する抵抗は、気体中を伝わる音波を減衰させる上で重要な役割を果たす。

Sense（1）

(uncountable) resistance to expansion and contraction by a fluid

Sense（2）

(countable) the measure of such

bulk viscosities

（ plural ）