Final answer:
The prefix 'magn' means large, great, or big, and is of Greek and Latin origin. It is present in English words such as 'magnet', which has historical roots referring to Magnesia, a source of lodestone, and 'magus', related to wisdom and later magic.
Step-by-step explanation:
The meaning of the prefix 'magn' relates to things that are large, great, or big. This prefix has roots in Greek and Latin and appears in various words that communicate size, importance, or intensity. For example, the word magnet comes from the Greek word magnes, which is thought to originate from Magnesia, a place known for its lodestone. Lodestone is a naturally occurring magnet, which is why the word magnet today describes an object that attracts iron. Another term, magus, stemming from the Persian, referred to a priest or wise man, which has evolved into the association we have with 'magic' or 'magi' as seen in the story of the Three Wise Men in Christian traditions.