parallel postulate

noun

, Geometry.

1. the axiom in Euclidean geometry that only one line can be drawn through a given point so that the line is parallel to a given line that does not contain the point.

parallel postulate

1. See under Euclidean

Example Sentences

The last published work of Saccheri was a recital of his endeavors at demonstrating the parallel-postulate.

From Project Gutenberg

It consists of results arrived at by geometers in seeking a proof of the parallel-postulate.

From Project Gutenberg