<p><strong>Noun</strong></p><ul><li>an act or instance of converging.</li><li>a convergent state or quality.</li><li>the degree or point at which lines, objects, etc., converge.</li><li>Ophthalmology: a coordinated turning of the eyes to bear upon a near point.</li><li>Physics: the contraction of a vector field.</li><li>a measure of this.</li><li>Meteorology: a net flow of air into a given region.</li><li>Compare divergence.</li><li>Biology: similarity of form or structure caused by environment rather than heredity.</li></ul>