noun which may take the genitive case particle 'no', noun
Used as a noun or no-adjective to describe substances that can dissolve in a solvent. Often appears in compounds like 水溶性 (water-soluble) or 脂溶性 (fat-soluble).
This vitamin is water-soluble.
Please choose a substance with high solubility.
Compound of 溶 (dissolve) and 性 (nature, property). The exact historical derivation is uncertain, but it follows a common pattern for forming property nouns in scientific terminology.