märtsi

Märtsi is the genitive singular form of märts, the Estonian word for March. In Estonian, the month name is märts in the nominative, while märtsi is used in genitive constructions to indicate possession or to express a time within the month. It is not used as the stand-alone name of the month.

The genitive form märtsi appears in phrases such as märtsi algus (the beginning of March), märtsi lõpp (the end of March), and märtsi jooksul (during March). These forms are common in discussing periods within March, or when attributing events to that month in a grammatical context.

Etymology and origin: märts as a month name is generally considered to be derived from the German März. The Estonian form märts, and its genitive märtsi, reflect this influence and the typical Finno-Ugric treatment of borrowed month names. The genitive Märtsi is a regular inflection used to connect the month to other words in a sentence.

In usage, märtsi operates as a regular grammatical form rather than a separate lexical entry. It is one of the standard ways Estonian expresses time within a month, alongside other cases and prepositional phrases that situate events in March.

See also: Estonian language; List of Estonian months; Month names in Finno-Ugric languages.