corradiation

CIDE DICTIONARY

corradiation, n. 

 A conjunction or concentration of rays in one point.  Bacom  [1913 Webster]

ROGET THESAURUS

corradiation

Focus

N focus, point of convergence, corradiation, center, gathering place, resort haunt retreat, venue, rendezvous, rallying point, headquarters, home, club, depot, trysting place, place of meeting, place of resort, place of assignation, point de reunion, issue.

Convergence

N convergence, confluence, concourse, conflux, congress, concurrence, concentration, convergency, appulse, meeting, corradiation, assemblage, resort, asymptote, converging, convergent, confluent, concurrent, centripetal, asymptotical, asymptotic, confluxible.