A measure of the efficiency of @[email protected] of molecules or atoms which collide with @[email protected] particles, cloud droplets, etc. The accommodation @[email protected] is the fraction of the collisions which result in the @[email protected] of the molecules (atoms, radicals, etc.) by the particle, cloud droplet, etc.; fraction of colliding molecules which are not reflected but which enter the surface of an aqueous @[email protected] Synonymous with @[email protected]