principal point

noun

, Optics.

First recorded in 1695–1705

The Hamid Karzai International Airport is the principal point of entry for foreign visitors coming to the landlocked country.

From Ozy

This is the first and principal point at which we can stanch the wastage of teaching energy that now goes on.

Shut in on the north by mountains, and south-west by (p. 347) the ocean, Pinar del Rio being the principal point in the district.

The Hellespont itself was, of course, one principal point of danger.

The principal point of difference is the amount of twist imparted to the cotton roving.

This is the principal point to be dealt with; it is here that we must make an adjustment.

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