Convergence

an act or instance of converging.

a convergent state or quality.

the degree or point at which lines, objects, etc., converge.

Ophthalmology . a coordinated turning of the eyes to bear upon a near point.

Physics .

the contraction of a vector field.

a measure of this.

Meteorology . a net flow of air into a given region. Compare divergence ( def. 2 ) .

Biology . similarity of form or structure caused by environment rather than heredity.

noun

concurrence , merging , confluence , meeting , conflux , concourse , gathering , coming , imminence , nearness , concurrency , convergency , joining