multi-
In general, don't hyphenate words beginning with multi- unless it's necessary to avoid confusion or multi- is followed by a proper noun.
Don't invent new words by combining words with multi-. Check The American Heritage Dictionary. If you don't find the word there or in the following list of examples, use multiple before the word instead.
Examples
multicast
multichannel
multicloud
multicolumn
multiline
multiprocessor
To learn more about hyphenation, see also Hyphens.
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