Search Result for "parallel axiom":
Wordnet 3.0

NOUN (1)

1. only one line can be drawn through a point parallel to another line;
[syn: Euclid's fifth axiom, parallel axiom]



WordNet (r) 3.0 (2006):

parallel axiom
    n 1: only one line can be drawn through a point parallel to
         another line [syn: Euclid's fifth axiom, parallel
         axiom]