Synonyms for concentration

noun

1. The act of bringing together

   assembly, consolidation, convergence, collection, combination, massing, amassing, compression, coalescing, compacting, congregation, gathering, flocking, huddling, clustering, fixing, centering, focusing, intensification; see also collection 1.

   Antonyms dispersal, separation*, scattering.

2. Anything brought together

   company, concourse, audience, miscellany, band, party, flock, herd, mass, group, array; see also army 2, collection 2, crowd 1.

3. Attention

   close attention, application, absorption; see attention 1, 2, thought 1.

4. Density

   solidity, consistency, frequency, strength; see congestion, density 1, intensity 1.