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Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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could have defined

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "could have defined" is correct and usable in written English.
It is typically used to express a possibility or hypothetical situation in the past regarding the act of defining something. Example: "If we had more time, we could have defined the project parameters more clearly."

✓ Grammatically correct

News & Media

Science

Human-verified examples from authoritative sources

Exact Expressions

15 human-written examples

It was the row that could have defined Britain's Beijing experience.

If I could have defined it, I wouldn't have written it.

News & Media

The New York Times

Any one of those things could have defined her, or destroyed her.

News & Media

The New Yorker

If you'd asked me what exactly I was nervous about, I doubt that I could have defined it.

News & Media

The New York Times

The Mets pulled out of the bidding for Alex Rodriguez, a charismatic player who could have defined the Mets for years to come.

Three specific examples come to mind as places where Mrs. Clinton could have defined herself as a more attractive role model than her husband.

News & Media

The New York Times
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Human-verified similar examples from authoritative sources

Similar Expressions

44 human-written examples

Fourth, we could not have defined the type of post-traumatic seizures (generalized tonic-clonic, partial, or partial complex seizures) nor have had the results of electroencephalogram in all patients who experienced post-traumatic seizure since our database only has clinical signs of post-traumatic seizure.

Proof We could equally have defined the Lefschetz number without homology as follows: λ ( f ) = ∑ i = 0 n ( − 1 ) i tr ( f ∗ : H i κ ( X ) ⟶ H i κ ( X ) ) = ∑ i = 0 n ( − 1 ) i tr ( f # ), where f # : C i κ ( X ) ⟶ C i κ ( X ).

However, all possibilia are in a clear sense there at each world all the same; Kripke could just as easily have defined the semantics of the quantifiers so that they ranged over all of them.

Science

SEP

Since glycosylation follows a defined pathway, we could have set up an algorithm suitable for the correlation analyses.

Science

Plosone

In particular, one could take a tree as we have defined them and give a description of how one would construct the picture.

Science

SEP
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Expert writing Tips

Best practice

Use "could have defined" to express hypothetical situations where something had the potential to shape or clarify a particular aspect in the past.

Common error

Avoid using "could have defined" when you mean to state a fact about what was actually defined. Use the past simple tense ("defined") instead.

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

85%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "could have defined" functions as a modal verb phrase expressing a hypothetical past action. It indicates that something had the potential or possibility to define something else, but it's not certain whether it actually did. As Ludwig AI confirms, it is grammatically correct and usable.

Expression frequency: Uncommon

Frequent in

News & Media

50%

Science

45%

Formal & Business

5%

Less common in

Encyclopedias

0%

Wiki

0%

Reference

0%

Ludwig's WRAP-UP

In summary, the phrase "could have defined" is a grammatically sound and useful expression for discussing potential past actions and their impact. Ludwig AI confirms its correctness and usability in written English. While not extremely common, the phrase appears in diverse contexts, notably news, scientific writing and formal/business communication. It is best employed when speculating about how past events might have shaped current situations. Keep in mind the nuances of alternative phrases such as "might have defined" or "was able to define" to precisely convey your intended meaning.

FAQs

How can I use "could have defined" in a sentence?

Use "could have defined" to talk about a past possibility or a missed opportunity to shape something, for example: "That decision "could have defined" their entire career."

What are some alternatives to using "could have defined"?

You can use alternatives such as "might have defined", "was able to define", or "would have defined" depending on the nuance you want to convey.

Is "could have defined" grammatically correct?

Yes, "could have defined" is grammatically correct. It uses the modal verb 'could' followed by 'have' and the past participle 'defined' to indicate a past possibility.

What's the difference between "could have defined" and "defined"?

"Could have defined" implies a possibility in the past that did not necessarily happen. "Defined" indicates a completed action in the past. For example: "The rules "could have defined" the outcome, but they didn't" versus "The rules defined the outcome."

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Source & Trust

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Authority and reliability

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Real-world application tested

Most frequent sentences: