esimesesse
esimesesse is a Finnish word, a grammatical form of the word "esimene." "Esimesesse" is the illative case of the ordinal number "esimene," which means "first." The illative case in Finnish indicates movement into something or a state of being within something. Therefore, "esimesesse" translates to "into the first" or "to the first."
This form would be used in sentences where one is indicating motion towards or entry into the