The crossword solution for the term 'PREFIX FOR 'EUROPEAN'' is 'INDO'. The prefix 'Indo-' is derived from the Latin word 'Indus' which means 'India'. It is used to refer to anything related to the Indian subcontinent, including its culture, language, and people. In the context of Europe, it is used to refer to the Indo-European languages, which are a large family of languages spoken in Europe, the Middle East, and South Asia.