- 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.
Also called parallel axiom.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for parallel axiom
The last published work of Saccheri was a recital of his endeavors at demonstrating the parallel-postulate.
It consists of results arrived at by geometers in seeking a proof of the parallel-postulate.
- See under Euclidean.
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