overcapitalizePronunciation: /əʊvəˈkapɪt(ə)lʌɪz/ (also overcapitalise)Definition of overcapitalize verb [with object] (usually as adjective overcapitalized) provide (a company) with more capital than is advisable or necessary:a bleak time for the overcapitalized firm estimate the capital value of (a company) at too high an amount. Derivatives overcapitalization noun overcapitalize in other Oxford dictionaries Definition of overcapitalize in the US English dictionary