Eiginleikum

Eiginleikum is an Icelandic noun form that refers to properties, characteristics, or attributes of something. It denotes inherent or defining features that help describe a thing’s identity, behavior, or function. The form is the dative plural of eiginleiki, the base noun meaning property or attribute.

In scholarly and technical Icelandic, eiginleikum is used to discuss the measurable or essential features of objects or systems—such as the material properties of a substance, the functional attributes of a device, or the characteristic features of a theory. It frequently appears in contexts that enumerate or compare features, for example in phrases that mean “with these properties.”

Grammatical and lexical notes: eigen eiginleikum is the dative plural form, while the singular is eiginleiki and the nominative plural is eiginleikar. Related terms include eiginleiki (property/attribute) and eiginleikar (features/characteristics). The concept is commonly employed across science, engineering, and philosophy to describe intrinsic qualities of entities, as distinct from contextual or relational aspects.