the strength of a solution; number of molecules of a substance in a given volume

the spatial property of being crowded together

[ Syn: density , denseness , tightness , compactness ]

strengthening the concentration (as of a solute in a mixture) by removing diluting material

increase in density

complete attention; intense mental effort

[ Syn: engrossment , absorption , immersion ]

bringing together military forces

great and constant diligence and attention

[ Syn: assiduity , assiduousness ]