Upplösts

Upplösts is a Swedish term that historically functions as the past participle form of the verb upplösa, meaning to dissolve, disband, or resolve in the sense of causing something to separate or be broken apart. In contemporary Swedish, the standard past participle used in most contexts is upplöst. The form upplösts is now relatively rare and appears primarily in older texts, formal prose, or certain dialects.

Etymology and morphology: The word derives from lösa, meaning to solve or to loosen, with the prefix upp- implying separation or release. The compound verb upplösa is separable, and its standard past participle is upplöst; the form upplösts can occur in historical or archaic syntactic patterns where a passive or adjectival participle agrees with a neuter noun, though this usage is uncommon in modern Swedish.

Usage notes: In chemistry and related sciences, Swedish typically uses lösa upp or upplösa to denote dissolution, and describes a substance as upplöst when it has been dissolved. The form upplösts is rarely used in current scientific writing and is more likely to be found in older literature or in careful, formal registers. Outside science, the concept of dissolution or disintegration can be expressed with upplöst, while upplösts may appear only as a historical or stylistic variant.

See also: upplösning, lösa upp, upplösningstid.