Others trace its roots to the Egyptian name  (hieroglyphic 𓆎𓅓𓏏𓊖  ), meaning 'black earth', which refers to the fertile and auriferous soil of the Nile valley, as opposed to red desert sand.
ˈʌðɚz tɹˈeɪs ɪts ɹˈuːts tə ðɪ ɪdʒˈɪpʃən nˈeɪm hˌaɪɚɹəɡlˈɪfɪk lˌɛɾɚwˌʌnθɹˌiːwˈʌnˌeɪtˌiːlˌɛɾɚwˈʌnθɹˌiːwˌʌnfˈaɪvθɹˌiːlˌɛɾɚwˌʌnθɹˈiːθɹˌiːsˌiːˈɛflˌɛɾɚwˌʌnθɹˌiːtˈuːnˌaɪnsˈɪks, mˈiːnɪŋ blˈæk ˈɜːθ, wˌɪtʃ ɹᵻfˈɜːz tə ðə fˈɜːɾəl ænd ɔːɹˈɪfɚɹəs sˈɔɪl ʌvðə nˈaɪl vˈæli, æz əpˈoʊzd tə ɹˈɛd dˈɛzɚt sˈænd.