noun which may take the genitive case particle 'no', noun
Describes a liquid or semi-liquid substance that resists flow and feels thick or sticky. Often used in everyday descriptions of consistency.
この液体は粘性が高く、なかなか流れない。
This liquid is highly viscous and doesn't flow easily.
粘性のあるペンキを壁に塗った。
I applied viscous paint to the wall.
noun
Technical term in physics and engineering for the measure of a fluid's resistance to flow.
水の粘性は温度によって変化する。
The viscosity of water changes with temperature.
Compound of 粘 (nen, 'sticky') and 性 (sei, 'property, nature'). The kanji 粘 is associated with stickiness and adhesion, while 性 indicates a characteristic or quality.