kalenderet
Kalenderet is a linguistic term used to denote the definite form of the noun kalender in some Scandinavian languages, most often encountered in Norwegian and Danish. The base noun kalender means “calendar” and is borrowed from Latin calendarium via Old French calendario. In practice, the standard definite singular in Norwegian Bokmål is kalenderen; kalenderet is typically found in dialectal, regional, or historical texts, and may appear in Danish orthography in older or regional spellings. The use of the suffix -et as a definite article reflects dialectal or historical variation; contemporary Norwegian generally prefers -en for masculine nouns in the definite singular.
As a grammatical form, kalenderet does not signify a distinct concept beyond the definite form of kalender.
In modern usage, most writers would employ kalenderen in Norwegian or the corresponding Danish form kalenderen,