The phrase "a defined area of" is correct and usable in written English.
It can be used when specifying a particular, clearly outlined space or region in various contexts, such as geography, research, or project management.
Example: "The study focused on a defined area of urban development to assess the impact of new policies."
Alternatives: "a specified region of" or "a designated zone of".
Cooking demonstrations and lessons will take place in a defined area of Xanadu devoted to retail associated with the home.
It says it had concluded the aircraft exhausted its fuel "over a defined area of the southern Indian Ocean".
The District, a state agency, possesses flood control powers within a defined area of the Coachella Valley, including Magnesia Springs Canyon and the City of Rancho Mirage.
Small groups of artisanal fishermen, registered as co-operatives, had exclusive rights to harvest loco and other benthic creatures in a defined area of seabed.
In our design, a hydrodynamic focusing of fluids with different conductivities allows for performing electroporation processes in a defined area of the microfluidic channel.
For safety purposes, only one train is allowed in a defined area of track at a given time, which means trains frequently have to pull over until given "track authority" to move ahead.
The novelty lay only in the scale of the scheme, which was not limited to a defined area of land or number of persons, and in the institution of a permanent executive of land commissioners.
The present study aims to promote a methodological scheme to combine the main environmental pressures that can be attributed to tourism activity in order to characterize environmental sustainability for a defined area of concentrated tourism (DACT).
'In aid of proposed legislation affecting the use and disposition of the petroleum deposits on the public domain, all public lands in (a defined area of over 3 million acres in California and Wyoming) are hereby temporarily withdrawn from all forms of location, settlement, selection, filing, entry, or disposal under the mineral or nonmineral public-land laws.
A simplified approach is proposed for the fatigue strength assessment with respect to root cracking, which is based on a local nominal stress in a defined area of the weld throat and on common fatigue classes for the assessment of cruciform joints.
These findings indicate that, without osteotomy, we can reproducibly create necrosis of bone in a defined area of the proximal femur and induce a reparative process that incompletely heals the defect.
