quintillion
/kwɪnˈtɪljən/cardinal number
(pl. quintillions或［与数词连用时］复同单)
1- a thousand raised to the power of six (1018). 1018（1000的6次幂）。
1.1
- dated, chiefly Brit. a million raised to the power of five (1030) 〈旧, 主英〉1030（100万的5次幂）。
派生词
quintillionth
ordinal number词源
late 17th cent.: from French， from million, by substitution of the prefix quinti-'five' （from Latin quintus 'fifth'） for the initial letters.