Word Knowledge

As an ASVAB tutor, I frequently remind the students in my ASVAB prep course to review prefixes, root words, and suffixes to improve their vocabulary for the Word Knowledge section.  Yesterday I presented a question about a prefix. Do you know what the prefix mega- means?  The prefix mega- means very large or huge.  Examples of words that include the prefix mega- are megabyte, megaphone, megawatt, and megavolt.