quadrillion C1 Topic:Numbers & Quantity US /kwɑˈdɹɪl.i.ən/ UK /kwɒˈdɹɪl.jən/ See IPA manual Freq #75069 Meanings 1 noun the number that is represented as a one followed by 15 zeros One quadrillion is written as a one followed by fifteen zeros in the short scale. Thesaurus Word family Derived forms quadrillionairequadrillionfoldquadrillionthquadzillion Related forms peta-yotta- Etymology From French quadrillion, from quadri- (“four”) + -illion. By surface analysis, quadr- + -illion. Topics Numbers & Quantity External links Cambridge Dictionary Wiktionary Google Images # quadrillion **Type:** Word **Level:** C1 **Part of speech:** noun **IPA (US):** /kwɑˈdɹɪl.i.ən/ **IPA (UK):** /kwɒˈdɹɪl.jən/ **Frequency rank:** 75069 ## Meanings 1. the number that is represented as a one followed by 15 zeros ## Examples - One quadrillion is written as a one followed by fifteen zeros in the short scale. ## Derived Forms - quadrillionaire - quadrillionfold - quadrillionth - quadzillion ## Related Forms - peta- - yotta- ## Etymology From French quadrillion, from quadri- (“four”) + -illion. By surface analysis, quadr- + -illion. ## Topics - Numbers & Quantity markdown