concentration
noun
[ kɒns(ə)nˈtreɪʃ(ə)n ]
• the action or power of focusing all one's attention.
• "she was frowning in concentration"
Similar:
close attention,
close thought,
attentiveness,
application,
industry,
assiduousness,
single-mindedness,
absorption,
engrossment,
focusing,
centring,
centralization,
direction,
• a close gathering of people or things.
• "the island has the greatest concentration of seabirds in the north-west"
Similar:
gathering,
cluster,
mass,
flock,
congregation,
assemblage,
assembly,
collection,
accumulation,
aggregation,
agglomeration,
• the relative amount of a particular substance contained within a solution or mixture or in a particular volume of space.
• "the gas can collect in dangerous concentrations"
