päivittäisestäviikoittaisesta
Päivittäisestäviikoittaisesta is not a standard Finnish term. It appears to be a concatenation of two related adjectives: päivittäisestä (daily, from päivittäinen) and viikoittaisesta (weekly). In Finnish, such double adjectives are normally written with a conjunction or as separate adjectives: päivittäisestä ja viikoittaisesta, or päivittäinen ja viikoittainen, depending on the noun and grammatical case.
Possible meanings: As a coined term, it could be used to describe something that has both daily
Grammatical usage: When modifying a noun, it is common to choose appropriate forms for each adjective to
Origin and usage context: The string could occur in branding or creative writing as a stylized shorthand
See also: Finnish grammar, compound words, partitive construction, attributive adjectives.