billionth

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Explanation of the Word "Billionth"

Definition: The word "billionth" can be used as both an adjective and a noun. It refers to the ordinal number of one billion (1,000,000,000) in counting order.

Examples:

1. Adjective: "The billionth digit of pi is 9."
2. Noun: "If you divided the population of the world into a billion parts, each part would be a billionth."

Advanced Usage:

In scientific contexts, "billionth" is often used to describe very small measurements. For example, "nanometers" are one billionth of a meter, which is important in fields like physics and chemistry.

Word Variants:

• Billion: The base number, 1,000,000,000.
• Billionaire: A person who has a billion or more in currency.
• Billionfold: A term used to describe something increased by a billion times.

Different Meaning:

In some contexts, "billionth" can also refer to something that is extremely small or insignificant. For example, "His chance of winning the lottery was a billionth."

Synonyms:

• One billionth
• 10^-9 (in scientific notation)

Idioms and Phrasal Verbs:

While "billionth" does not commonly appear in idioms or phrasal verbs, you could use it in a phrase like "a billionth of a chance," meaning a very small chance of something happening.

Conclusion:

The word "billionth" helps us understand quantities in a very large context, whether in mathematics, science, or everyday language.

Academic

Adjective

1. the ordinal number of one billion in counting order

Noun

1. one part in a billion equal parts
2. position 1,000,000,000 in a countable series of things

Synonyms

• one-billionth