fourfold
/fɔ:'lould/
Học thuậtThân thiện
Definition
Adjective:
- Consisting of four parts or elements: Describing something that has four distinct units, components, or members.
- Four times as great or as many: Indicating an amount or quantity that is multiplied by four.
Adverb:
- By a factor of four: To a degree or amount that is four times greater.
Usage Examples
Adjective:
- The company reported a fourfold increase in profits this quarter.
- The design is based on a fourfold symmetry, with each quadrant mirroring the others.
Adverb:
- The population of the town has grown fourfold in the last decade.
- By optimizing the process, we were able to reduce the time required fourfold.
Advanced Usage
- In mathematical or statistical contexts: Used to describe precise multiplicative relationships.
- The experiment showed a fourfold rise in the reaction rate when the catalyst was added.
- In formal or technical writing: Often used in reports, research papers, and economic analyses to describe growth, increase, or division.
- The risk was calculated to be fourfold higher in the test group.
Variants and Related Words
- Quadruple (adjective, verb, noun): Often used interchangeably with "fourfold" as an adjective. As a verb, it means to multiply by four.
- They plan to quadruple their investment.
- Fourfold can be written as "four-fold", especially in older texts or for stylistic clarity.
Synonyms
- Quadruple: Four times as great or consisting of four parts.
- Four times: A more common phrase for the adverbial meaning.
Notes on Different Meanings
The core meaning of "fourfold" consistently relates to the number four, either in structure (having four parts) or in scale (being four times larger). There is no significant idiomatic shift in meaning.
Adjective
- having four units or components
- quadruple rhythm has four beats per measure
- quadruplex wire
- four times as great or many
- a fourfold increase in the dosage
Adverb
- by a factor of four
- the price of gasoline has increased fourfold over the past two years