Pronunciation: /sɛpˈtɪljən/
noun a cardinal number represented in the U.S. by 1 followed by 24 zeros, and in Great Britain by 1 followed by 42 zeros.
A1 A septillion is a very large number.
A2 The concept of a septillion may be difficult for some people to grasp.
B1 In scientific notation, a septillion is written as 1 x 10^24.
B2 The estimated number of stars in the universe is in the septillions.
C1 The total number of possible combinations in a complex system can reach into the septillions.
C2 When discussing the scale of the universe, astronomers often use numbers in the septillions.
formal The probability of winning the lottery is extremely low, at about one in several septillion.
informal There's like a septillion things I'd rather be doing right now than studying for this exam.
slang I have a septillion things on my mind right now, I can't even focus.
figurative The amount of stars in the universe is estimated to be in the septillions, showing just how vast and infinite space really is.
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