"discernible trend" is a correct and usable phrase in written English.
It can be used to describe a noticeable pattern or direction in something, such as data or behavior. Example: "The data from the past five years shows a discernible trend of decreasing sales for the company."
This is consistent with a discernible trend, argues Juan Costa Climent, Ernst & Young's head of sustainability.
The major discernible trend was the way in which Asian ingredients have made themselves at home in western menus.
Other highlights from the report: There was "no discernible trend" in illegal pot cultivation on public land, which includes most of Colorado's ski resorts.
In facing up to the problems with contemporary South African society, there has been a regrettable and discernible trend towards novels with a "faults on both sides" attitude.
Even before Gorbachev, there had been a discernible trend in military thinking toward emphasizing the opening conventional stage of a war and toward achieving victory within that stage.
"But as of now, no discernible trend has been detected in the observational data, and studies of how tornadoes will fare in a warmer world show somewhat conflicting results".
But there will not be a lot of discernible trends over the next six months.
NASA researchers told him that there were no discernible trends in sea ice.
That's because this outcome could arise out of already discernible trends, all of which predated Sept. 11, 2001.
In practice, that may be a fine distinction, and there have, in broad terms, been discernible trends.
"Despite an eminent handful," Mr. Ward wrote, "Negro dramatists remain sparse in number, productions sporadic at most, and scripts too few to indicate discernible trends".
