- the assembling of military or naval forces in a particular area in preparation for further operations.
- a specified intensity and duration of artillery fire placed on a small area.
- concentration camp,
- concentration cell,
- concentration gradient,
Origin of concentration
Examples from the Web for concentration
Within a concentration camp, would someone make a joke about the number, the tattooed number?Daphne Merkin on Lena Dunham, Book Criticism, and Self-Examination|Mindy Farabee|December 26, 2014|DAILY BEAST
This is important in the concentration process, which takes place by means of an extraordinarily measured period of boiling.
The concentration of PM2.5, the smallest particulate matter, is at 153 micrograms per cubic meter.
At any moment, the slightest loss in concentration could see a disastrous tumble.
She described the influence of her mother, a concentration camp survivor.
In this way salts act in two quite different directions according to the concentration of the slip.The Natural History of Clay|Alfred B. Searle
Concentration is the prime requisite in attaining rapid results.Expressive Voice Culture|Jessie Eldridge Southwick
He has the constitution of a rhinoceros, the digestion of an ostrich, and the concentration of an oyster.Little Dorrit|Charles Dickens
An intelligent prayer in this light is the concentration of thought on a subject, or a definite realization.The Mystic Will|Charles Godfrey Leland
She continued this with a certain sedateness and concentration until the tassel went beyond her reach and caught in the curtain.Children of the Desert|Louis Dodge
- the act of bringing together military forces
- the application of fire from a number of weapons against a target
1630s, "action of bringing to a center," noun of action from verb concentrate (v.). Meaning "a mass so collected" is from 1670s; "continuous focus of mental activity" is from 1846.