pitkänomaisesta
Pitkänomaisesta is not a widely recognized stand-alone concept in standard Finnish. It is best understood as an inflected form that could arise from the adjective or noun related to the idea of length or duration, such as an imagined adjective pitkanomainen or the noun pitkänomaisuus. The element “pitkä-” means long, and the sense of the whole form would be shaped by the surrounding word and the intended meaning in a sentence. Because the term is not established in common usage, its exact interpretation is context-dependent.
In practical language use, Finnish more commonly distinguishes between long duration or long-term perspective with words
Morphology-wise, the ending -sta/-stä signals the elative case in Finnish, which expresses origin or source. Thus
See also: Finnish grammar; Finnish adjectives and inflection; long-term terminology in Finnish.