arkuskosini

== Finnish == === Etymology === Internationalism (see English arccosine), equivalent to arkus- +‎ kosini. === Pronunciation === IPA(key): /ˈɑrkusˌkosini/, [ˈɑ̝rkus̠ˌko̞s̠ini] Rhymes: -osini Syllabification(key): ar‧kus‧ko‧si‧ni Hyphenation(key): arkus‧kosi‧ni === Noun === arkuskosini (trigonometry) arccosine ==== Declension ====