one-fifth

Thân thiện

A pizza is cut into five equal slices, and one-fifth of it is missing.

Definition

Noun: - One part in five equal parts: A single portion resulting from the division of a whole into five equal parts; equivalent to 1/5 or 20%.

Usage

This word is used to specify a precise fractional amount of something. It functions as a quantifier. - It is often used in statistical, mathematical, or descriptive contexts to indicate proportion. - It can be preceded by articles like "a" or "one" (e.g., a one-fifth).

Examples

Advanced Usage

• "by a factor of one-fifth": indicating a reduction to 20% of the original amount.
  • The new process reduced waste by a factor of one-fifth.
• Used in formal or technical writing to express ratios and percentages clearly.

Variants and Related Words

• Fifth (noun): Can be synonymous with "one-fifth" (e.g., ). Also refers to the ordinal number (5th) or a musical interval.
• 20 percent: The equivalent percentage.
• Fraction: The general class to which this word belongs.

Synonyms

• Twenty percent
• A fifth

Notes

• "One-fifth" is a specific term. Do not confuse it with the ordinal number "fifth" (5th), which indicates position in a sequence.
• It is typically written with a hyphen when used as a noun phrase modifier before another noun (e.g., ).

Học thuật

Noun

1. one part in five equal parts

Từ đồng nghĩa

• fifth
• fifth part
• twenty percent