yhdyssana

Etymology
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Noun

 * 1)  compound word, compound, often: compound noun

Usage notes

 * In Finnish spelling, all compounds are spelled as closed compounds or hyphenated compounds, so the term yhdyssana is often erroneously used to only refer to closed or hyphenated compounds in English, and the term (whose correct meaning is phrase, set phrase, or fixed phrase) is often erroneously used to refer to English open compounds.
 * In Finnish spelling, compounds will be hyphenated under certain conditions (see the rules described here).