The phrase "a significant revision" is correct and usable in written English.
It can be used when discussing changes or updates that are substantial in nature, often in the context of documents, plans, or projects.
Example: "After reviewing the feedback, we decided that a significant revision of the report was necessary to address all the concerns raised."
Alternatives: "a major update" or "a substantial change".
But there is enough common ground among the various proposals to indicate that a significant revision of the purchasing rules is likely.
Since the Sept. 11 attacks, Attorney General John Ashcroft has proposed a significant revision of the country's intelligence laws that would permit the F.B.I. to conduct intelligence investigations more easily, including relaxing the criteria needed for search warrants.
This is a significant revision since it broadens the scope of responsibility for warfare beyond political institutions to include the men and women who engage in combat.
For a President Romney to succeed in his pledges would require a significant revision to the Clean Air Act and other landmark environmental laws enacted over the past 40 years.
(Earlier on Thursday, Anheuser-Busch InBev announced a significant revision of its deal to buy Grupo Modelo of Mexico, in an effort to head off a battle with the Justice Department on antitrust grounds).
1172 Venice, Italy Vitale II Michiel, (died 1172, Venice) doge of Venice who ruled during an important crisis in the Venetian Republic's relations with the Byzantine Empire and whose assassination led to a significant revision of the Venetian constitution.
Daily deals site Groupon today issued a pretty significant revision of the financial results it previously reported for the fourth quarter and the full year of 2011.
The effort to rally the committee around the president's agenda without much debate succeeded in approving the platform with only a few significant revisions.
In its report, Ofqual said there had been "significant revision" to GCSEs and A-levels in the last three years.
Although the paper is an important contribution, it will require significant revision in several areas.
"Cat may be the only company I follow that hasn't had a significant profit revision".
