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English definition of “combining form”

combining form

noun [C]    /kəmˈbɑɪ·nɪŋ ˌfɔrm/
grammar a word part to which prefixes and word endings or other combining forms can be added to make a word, as " bio- ," "-graphy," and "-logy" combine to make " biology " and " biography "
(Definition of combining form noun from the Cambridge Academic Content Dictionary © Cambridge University Press)
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