'prime object' is a correct and usable phrase in written English.
It can be used to describe an object that is the most important or most prominent among many. For example, "The prime object in the room was the modern bronze sculpture."
"Histories of Belonging and George Kubler's Prime Object," Getty Research Journal, 3 (2011), 1-14.
He seems not to have been a prime object of schoolboy affection: "He took some knowing" was a typical reminiscence.
The creation of a commission, with power to establish rules for the operation of railroads, and to regulate rates, was the prime object of the legislation.
As to Mr. bin Laden, the prime object of the American hunt, Commander Zaman asserted, "I am sure 100percentt he is here".
Jason Kidd, the prime object of the fans' vulgarities last season, and whose wife, Joumana, was the focus of Ryan's tirade, said he will tune out any distractions.
In other words, voters are selecting not just a political programme but a personality.Perhaps inevitably, the struggle among the rival leading candidates to fill this role has duly turned personal and Mr Sarkozy has been the prime object of attack.
That is why cities are prime objects of nostalgia in our very nostalgic age.
This great work brought political discussion into the public arena in France by its insistence upon the wide variation of sociopolitical forms throughout the world, its attempt to assess their relative effectiveness, and its assertion of the need, in whatever form of society, to maintain liberty and tolerance as prime objects of concern.
Of the cadres of providers that were interviewed, obstetricians constituted the group that directly provided abortion care and thus were the prime objects of stigma.
A potential limitation of Experiment 1 was that the initial prime selection task may have temporarily primed object-evaluation associations which in turn, produced the affective priming effects rather than automatic activation.
They might go along with rather than oppose the plan and risk their weakness being exposed if their objections are then ignored.Bajram Kosumi, Kosovo's new prime minister, objects to any conditions being placed on Kosovo's independence, as indeed to any UN envoy discussing its status Kosovo with Belgrade.
