单词	quintillion
释义	Quintillion A million million millions. 1,000,000 x 1,000,000 x 1,000,000 = 1,000,000,000,000,000,000 Which is a 1 followed by 18 zeros Using scientific notation: 1 × 1018 We could also think of it as a million trillion or a billion billion. Examples: • our Milky Way Galaxy is about a quintillion meters wide • the volume of Earth's oceans is 1.35 quintillion cubic meters • there are about 10 quintillion insects on Earth The prefix "exa-" means a quintillion. Example: an exameter is a quintillion meters. Below is a cube made of a million smaller cubes. If each of the small cubes is worth a trillion dollars, then the whole cube is worth a quintillion dollars. See: Million
随便看	hypercube hypocycloid hypotenuse hypothesis i (unit imaginary number) icosahedron identity image imaginary number imperial system improper fraction incenter inch incircle incircle of triangle included angle included side income increase increment indefinite integral independent event independent variable indeterminate index (power)

数学辞典收录了1200条数学词条，基本涵盖了常用数学知识及数学英语单词词组的翻译及用法，是数学学习的有利工具。