What is Quaternion called in Croatian with how to pronounce and transliteration in English?

English to Croatian

• Coordinate System Koordinatni sustav
• Continuous Function Neprekidne funkcije
• Binomial dvočlan
• Critical Point Kritičn točka
• Vector Space Vektorski prostor
• Partial Derivative Djelomično Izvedeni
• Binomial Theorem Dvojno poučak
• Perpendicular perpendikular
• Curvature kurvatura
• Complex Number Kompleksni broj