suuruisina
Suuruisina is a Finnish grammatical form rather than a standalone lexical item. It functions as the plural essive, a case used to express a temporary state or role, here relating to size or magnitude. The base meaning is connected to suuruus, meaning greatness or size, and suuruisina represents how that notion can appear when referring to multiple entities in the sense of “as sizes” or “in the capacities of magnitudes.”
In Finnish, the essive marks a state of being or role, and the plural form is used
Usage and occurrence: suuruisina is primarily encountered in formal, descriptive, or literary Finnish and in linguistic
See also: Finnish grammar, Essive case, Plural inflection, Finnish morphology.