indissolubles

Indissolubles is the plural form of indissoluble and is used to describe substances, bonds, or concepts that cannot be dissolved or broken, at least under stated conditions. In chemistry, indissoluble often means that a substance does not dissolve in a given solvent under standard conditions. In practice, chemists distinguish soluble, sparingly soluble, and insoluble substances; solubility depends on temperature, pH, ionic strength, and the presence of complexing ligands. Common water-insoluble solids include barium sulfate and calcium carbonate, which have very low solubility products. No substance is absolutely insoluble in all solvents and conditions; extreme conditions such as high temperature, different solvents, or pressures can change solubility.

In religious and philosophical usage, indissolubility refers to the permanent nature of certain bonds or commitments. In many Christian traditions, marriage is described as indissoluble, meaning that the marital bond is not dissolvable by human authority, although separation, annulment, or death may affect the relationship in practice or law.

In a broader sense, the term is used metaphorically to describe enduring relationships, identities, or commitments resistant to dissolution, such as indissoluble ties between cultures, languages, or ideas. Overall, indissolubles conveys the idea of permanence or inviolability across different contexts.