ɪn pɚtˈɪkjʊlɚ, ɐn ˈɛn tˈaɪmz ˈɛn mˈeɪtɹɪks ɪz dᵻfˈɛktɪv ɪf ænd ˈoʊnli ɪf ɪt dʌznˌɑːt hæv ˈɛn lˈɪnɪɹli ˌɪndᵻpˈɛndənt ˈaɪdʒənvˌɛktɚz.
In particular, an n × n matrix is defective if and only if it does not have n linearly independent eigenvectors.