Learn how to say Prefixation correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word prefix:
a word, letter, or number placed before another:
the Institute was granted the prefix ‘Royal’ in 1961
an element placed at the beginning of a word to adjust or qualify its meaning (e.g. ex-, non-, re-) or (in some languages) as an inflection.
a title placed before a name (e.g. Mr).
add (something) at the beginning as a prefix or introduction:
a preface is prefixed to the book
add a prefix or introduction to (something):
all three-digit numbers will now be prefixed by 580