suurennusmerkkiä
The term "suurennusmerkkiä" is the partitive singular form of the Finnish word "suurennusmerkki." This translates to "magnification mark" or "enlargement mark" in English. In the context of Finnish language and orthography, a "suurennusmerkki" is a diacritical mark used to indicate that a vowel should be pronounced with a longer duration or emphasis. It is essentially the same concept as the acute accent (´) found in many other European languages.
This mark is primarily used over vowels such as a, e, i, o, u, y, ä, and