'Vanishing point' definitions:

Definition of 'vanishing point'

From: WordNet
noun
The point beyond which something disappears or ceases to exist
noun
The appearance of a point on the horizon at which parallel lines converge

Definition of 'Vanishing point'

From: GCIDE
  • Vanishing \Van"ish*ing\, a. & n. from Vanish, v. [1913 Webster]
  • Vanishing fraction (Math.), a fraction which reduces to the form 0/0 for a particular value of the variable which enters it, usually in consequence of the existence of a common factor in both terms of the fraction, which factor becomes 0 for this particular value of the variable. --Math. Dict.
  • Vanishing line (Persp.), the intersection of the parallel of any original plane and the picture; one of the lines converging to the vanishing point.
  • Vanishing point (Persp.), the point to which all parallel lines in the same plane tend in the representation. --Gwilt.
  • Vanishing stress (Phon.), stress of voice upon the closing portion of a syllable. --Rush. [1913 Webster]