The phrase "a defining message" is correct and usable in written English.
It can be used when referring to a message that clearly expresses the essence or key point of a concept, idea, or communication.
Example: "The CEO's speech delivered a defining message about the company's commitment to sustainability."
Alternatives: "a pivotal message" or "a crucial message".
In the first set of experiment, we validated the applicability of node's attribute in defining message delivery capability of a node.
The Liberals are betting that their campaign's defining message of change will trump the Conservatives, who have been urging voters to "protect the economy" at all costs, and stay on the course set by their electoral victory in 2006.
Crump said that the daughter of the late civil rights leader Martin Luther King Jr ,Dr Bernice King, had sent him a message that read: "Today is a defining moment for the status of my father's dream.
The oil spill coverage has been a "defining moment" for Mr. Cooper, said Verne Gay, the television critic for Newsday, in an e-mail message.
The NLD's message of change is one that has inspired the nation as they hopefully take a defining step in their country's reform process.
Each party leader got their message across - the soundbites were readily identifiable - but while this might have been a defining moment in putting the fragmented nature of our politics on display on prime-time television, it didn't really feel like a defining moment in the election.
Reading that book became a defining step in my journey with prostate cancer -- and in my belief that I must share this message and launch a prostate cancer nonprofit: the Blue Cure Foundation.
"After a couple of months, I called my dad and left a message, and when he called back, he said he was surprised by my voice," she said, a defining moment in her transition.
That was a defining moment.
