The phrase "exclusively defined" is correct and can be used in written English.
It means that something is strictly or narrowly defined without any room for exceptions. Example: The terms and conditions of the contract were exclusively defined, leaving no room for negotiation or flexibility.
Some officials in the White House, State Department, Pentagon and Central Intelligence Agency argue that the threat has been almost exclusively defined by technological abilities and that the emerging analysis discounts political, economic and social factors that could make a threat less likely.
JONATHAN MILLS, director and chief executive, Edinburgh International Festival I think there is a sense of apprehension about the inevitably diminished role that places like the United States and Europe might be playing in the world, but that discussion is almost exclusively defined in economic terms.
For them, a successful life isn't exclusively defined by a successful career.
Twitter is most often exclusively defined as a microblogging service, emphasizing its broadcasting nature.
The possible hits only include human insular neurons (eliminating neurons from the 'rat' insula), since fronto-insula is exclusively defined in humans.
The absence of ethnic classifiers in census and survey data is a major way of rendering invisible communities that are largely (although not exclusively) defined by pastoralism in a country where there is a strong political bias towards agriculture.
There is no set of features that exclusively defines movements, parties, and people that are called "populist": the different people and parties that are placed in this category enjoy family resemblances of one to the other, but there is not a universal set of traits that is common to all of them.
Depressed mood exclusively defines depressive disorders, except that in youth an irritable mood can substitute for a depressed mood to define major depressive episodes and dysthymic disorders [ 1].
The Enzyme Commission number (EC number) was used as a numerical classification scheme for enzymes based on the metabolic reactions they catalyze, with each EC class exclusively defining the function performed by the enzyme.
However, these differences between practices just remark the adopter categories in the electronic health records adoption process and, therefore, this situation exclusively define the time it takes for a system to be adopted rather than deciding to adopt it.
Hence, instead of exclusively defining differentially expressed genes, the identification of groups of highly co-expressed (CE) genes or gene modules may facilitate the identification of genes under a common regulatory mechanisms by linking upstream sequence motifs with the known binding sites of transcription factors.
