'primacy on' is not correct and cannot be used in written English.
If you are looking for a phrase to convey the idea of something having primary importance or emphasis, you might use 'focus on' or 'emphasis on'. For example: The company placed an emphasis on improving customer service.
"I've been in similar situations, where I suddenly discovered we've created military commissions: 'Wait a minute — that's a legal matter and a legal matter the State Department has primacy on.' " But Powell was one of several former Secretaries to express bafflement at Tillerson's approach to his shrinking mandate.
He is tasked with overhauling a firm that put a primacy on high-risk trading under his predecessor, John J. Mack, and one that has spent the last several years often riven by factional disputes and internal debates over strategy.
Obesity is frowned upon since it places a primacy on food over worship.
The competition between Jews and Muslims for primacy on the Mount is a comparatively recent phenomenon.
The United States primacy on the Top500 list has slipped for a number of reasons.
After a decade and a half of Labour primacy on the economy, Cameron now outpolls Brown on economic questions.
The industry and local county governments, which get a share of the proceeds, say the plan restores the rightful primacy of logging on these tracts.
PAGE D1 Obituaries LES CRANE, 74 The personable, cocky talk show host was the first to challenge the primacy of Johnny Carson on late night television -- and lose.
Les Crane, a provocative talk-show host who was the first to challenge the primacy of Johnny Carson on late-night television — and lose — died Sunday in Greenbrae, Calif., north of San Francisco.
The ecclesiastic policies of Maria Theresa, like those of her devout predecessors, were based on primacy of government control in the relations between the Church and the State, but not of organization of the Church.
The emphasis isn't on the primacy of the individual soloist, but on the weave.
