The phrase "a major participant in" is correct and usable in written English.
It can be used to describe someone or something that plays a significant role in a particular event, activity, or context.
Example: "The organization was a major participant in the international conference on climate change."
Alternatives: "a key player in" or "a significant contributor to".
The Navy participated in Operation Enduring Freedom, Operation Iraqi Freedom, and is a major participant in the ongoing War on Terror, largely in this capacity.
In addition, Indonesia was a major participant in the creation of the Association of Southeast Asian Nations ASEANN) in 1967.
Mr. Mozilo's trial had been widely anticipated because it represented one of the few public prosecutions of a major participant in the mortgage crisis.
A visiting American official today praised China for becoming "a major participant" in nonproliferation efforts in Asia and around the world but said two days of talks did not allay concerns about recent Chinese help for Pakistan's ballistic missile program.
There are almost 150 genes in Arabidopsis that are the counterparts of human disease genes, said Claire Fraser, president of the Institute for Genomic Research in Rockville, Md., a major participant in the project.
"It gets a lot of attention, but it's a colossal distraction," said Dr. Eric S. Lander, director of the Whitehead Center for Genome Research in Cambridge, Mass., a major participant in the consortium.
"If you have a major participant, as MF Global was in the derivatives and commodities markets, there should be a regulator looking at the risks it poses to the system as a whole".
As a matter of historical fact, Deville, the major participant in the experimental confirmation, was opposed to atomism, as Duhem (2002, 96 7) stressed.
As Barthes's writing developed, he became the latest major participant in the great national literary project: the self as vocation, life as a reading of the self.
Accolades aside, how can one write about the joyful feast that is Singin' In The Rain, and not mention nineteen year old ingénue Debbie Reynolds, the only major participant in the production still with us?
This simple molecular picture has been challenged by recent theoretical and experimental evidence suggesting that the major anionic lipid component in many cells, phosphatidylserine (or phosphatidylglycerol), might not be the major participant in peripheral protein binding (10– 10).
