It is a woman's name of Irish origin that means pure, immaculate, white. There are many variants in languages such as Slavic, English, Spanish and Portuguese (among others: Katherin, Catherine, Caterina, Katherina, Catlin, Kathiin, Catarina, changing the c for k, adding intermediate h, or changing the i for e.
KATHERINE feminine name meaning white, immaculate. Wikipedia claims to be of Greek origin, because Katharos is pure, but I disagree, as it is part of Scandinavian mythology, from which Karen derives and which passed into Russian Katherina, Katarina. In English it is Catherine and her diminutives Kate, Katy, Kathy. KATHERINE or Catherine was Castilianized to Catalina in Spanish, and its diminutives Cate, Caty, Cata.