quintillionth

Thân thiện

A scientist carefully measures a quintillionth of a gram of a rare substance.

Definition

1. Adjective:

   • Being the ordinal number corresponding to the quantity of one quintillion (10^18 or 1,000,000,000,000,000,000) in a sequence. It denotes position or order in a series.

2. Noun:

   • One of a quintillion (10^18) equal parts of a whole. It represents the fraction 1/(10^18).

Examples of Usage

• Adjective:

  • The event celebrated the quintillionth visitor to the website. (This describes the visitor's position in a counted sequence.)
  • He calculated the quintillionth digit of the mathematical constant. (This refers to the digit's specific place in an extremely long sequence.)

• Noun:

  • A nanometer is a quintillionth of a meter. (This expresses a measurement as an extremely small fraction.)
  • The probability of that event is less than one quintillionth. (This uses the noun to describe a minuscule chance.)

Advanced Usage

• Scientific Notation: In technical writing, the concept is often expressed as 10^-18 (for the noun) or simply as the ordinal for the 10^18th position.
  • The sensor can detect displacements on the order of 10^-18 meters. (This is equivalent to a quintillionth of a meter.)

Variants and Related Words

• Quintillion (n): The cardinal number equal to 10^18.
  • The national debt is measured in the quintillions.
• Quintillionfold (adv): By a factor of one quintillion.
  • The investment grew quintillionfold over the theoretical model's timeline.

Synonyms

• Adjective: 10^18th.
• Noun: One part in a quintillion.

Related Phrases

• (one) in a quintillion: An idiomatic expression for an extremely rare occurrence.
  • Finding that artifact was a one in a quintillion chance.

Học thuật

Adjective

1. the ordinal number of one quintillion in counting order

Noun

1. one part in a quintillion equal parts

Từ đồng nghĩa

• one-quintillionth