Vocabulary Entry

quintillionth

|noun

noun

The ordinal form of the number quintillion, representing 10^18 in the American numbering system.

Example Sentences

"The distance to the nearest star is measured in quintillionths of a light-year."

"In mathematics, we often deal with quantities that can be as small as a quintillionth."

"The scientist measured the chemical concentration in quintillionths of a gram."