Meaning of SECTION in English

SECTION

( n. )

The figure made up of all the points common to a superficies and a solid which meet, or to two superficies which meet, or to two lines which meet. In the first case the section is a superficies, in the second a line, and in the third a point.

Webster's Revised Unabridged English Dictionary.      Пересмотренный полный словарь английского языка Webster.