The phrase "partial area" is correct and can be used in written English.
Example: The construction project will only affect a partial area of the city.
Ma H, Bandos AI, Rockette HE, et al. On use of partial area under the ROC curve for evaluation of diagnostic performance.
The false positive rate (FPR), true positive rate (TPR), and partial area under the curve (AUC) are calculated for each discrimination threshold.
In the draft guideline issued in 2013, new partial area under the curve (pAUC) pharmacokinetic (PK) parameters were introduced to that effect.
One of the important recurring themes of the prophetic movement was the adamant rejection of any tendency to limit divine sovereignty to the partial area of "religion," understood as the realm of the priesthood and cult.
The snow cover persistence period declined significantly in the western Tibetan Plateau as well as partial area of Central Asia and northwestern Russia, but varied little in other parts of Eurasia.
However, field observations of soil development and rill geometry in small, first-order catchments (0.1 to 1 ha) of the Zin Valley Badlands, northern Negev, Israel, suggest a pattern of partial area contribution and frequent flow discontinuities along hillslopes and channels.
Kashmir is divided between India and Pakistan, which both claim the region in full but administer separate partial areas.
Dunne overland flow is generated from partial areas of the hillslope where water tables are shallowest.
Visibility in partial areas is around 10 m which is not regarded as a tenable condition.
Horton overland flow is generated from partial areas of the hillslope where surface hydraulic conductivities are lowest.
"We understand that the potential investors are interested in acquiring the entire site and not in breaking off pieces into partial areas".
