heittomerkki
Heittomerkki is a Finnish punctuation mark, equivalent to the apostrophe in English. Its primary function is to indicate the omission of letters within a word or to denote a possessive form. For example, it is used in contractions such as "eikä" becoming "eik’" or to show that a word is part of a genitive case, like "Pekka’s" in English, which would be "Pekan".
In Finnish, heittomerkki is also employed when forming compound words or when a proper noun is followed