The phrase "advancing border" is correct and usable in written English.
It can be used in contexts discussing territorial changes, military movements, or metaphorical boundaries in various fields such as politics or technology.
Example: "The advancing border of the nation raised concerns about potential conflicts with neighboring countries."
Alternatives: "expanding frontier" or "moving boundary".
American frontier, in United States history, the advancing border that marked those lands that had been settled by Europeans.
Ophthalmic examination revealed an advancing border of white granular CMV retinitis extending into the macula.
Funduscopic examination revealed moderate non-proliferative diabetic retinopathy in both eyes and an advancing border of white granular retinitis surrounding the inferior and temporal macula of the left eye.
Fig. 1 a) Fundus photo of the left eye with Kyrieleis plaques (arrows) involving the retinal arteries associated with an advancing border of granular Cytomegalovirus retinitis located at the border of the temporal and inferior macula.
Serial sections were stained with hematoxylin and eosin or processed for immunohistochemistry. Routine hematoxylin and eosin-stained histopathological sections were used to determine the infiltration of lymphocytes and eosinophils at the advancing border of the tumors for all patients by pathologists of the Pathology Review Committee PRCC).
The Canadian presentation was intended to advance border cooperation and associated projects based on the Dubai Process, covering the new Joint Border Coordination Center in Spin Boldak, progress with truck surveillance equipment, satellite phones, and construction of a new border facilities at the Weiche crossing to begin in 2010 (maybe).
Many shared common challenges and ways to overcome them were identified; including, advancing cross-border integration, promoting evidenced-based practice and addressing key public health challenges.
American forces reacted forcefully after the attack on the border post, moving into the area and even advancing across the border into Pakistan in pursuit of the rebels, General Khakrezwal said.
The addition of the new Kobo device advances Borders as a preferred destination for eReaders for virtually every household.
Witnesses report rebels advancing from Mauritanian border where they had retreated under French air attack.
The enhanced Chinese activity is directed towards weakening India's close and privileged relationship with Bhutan, opening the door to China's entry and settlement of the Sino-Bhutan border, advancing Chinese security interests vis-à-vis India.
