Etymology (early 17th century) From a Romance language, see French concentrer, Italian concentràre, Spanish concentrar; alternatively from Medieval Latin/New Latin concentrō + -ate (verb-forming suffix). Compare also earlier concentre and German konzentrieren. By surface analysis, con- + center (centr- in compounds) + -ate (verb-forming suffix).
1
Ergative To bring to, or direct toward, a common center; to unite more closely; to gather into one body, mass, or force.
to concentrate rays of light into a focus
to concentrate the attention
2
To increase the strength and diminish the bulk of, as of a liquid or an ore; to intensify, by getting rid of useless material; to condense.
to concentrate acid by evaporation
to concentrate by washing
3
To approach or meet in a common center; to consolidate.
Population tends to concentrate in cities.
Buried within the Mediterranean littoral are some seventy to ninety million tons of slag from ancient smelting, about a third of it concentrated in Iberia. This ceaseless industrial fueling caused the deforestation of an estimated fifty to seventy million acres of woodlands.2006, Edwin Black, chapter 2, in Internal Combustion:
4
To focus one's thought or attention (on).
(oneself)
Let me concentrate!
1 more example
The Group has recently concentrated on two main objectives, the implementation of a Code of Practice on minor station improvements and the preparation of a stock list of approved items of equipment for railway stations.1962 October, Brian Haresnape, “Focus on B.R. passenger stations”, in Modern Railways, page 252:
Etymology From Medieval Latin/New Latin concentrātus, perfect passive participle of concentrō (“concentate”). See Etymology 1 and -ate (adjective-forming suffix) for more.
1
concentrated
It is, when good, a concentrate yellow.1758, Robert Dossie, The Handmaid to the Arts, volume I., page 114:
Subtracting the liters of concentrate fluid required in the diluted operation.2011, v. 80/1, Optimizing Use of Aircraft Deicing & Anti-icing Fluids (ACRP):
concentrate
noun
Etymology From a substantivation of the above adjective. See also -ate (noun-forming suffix). Compare French concentré and German Konzentrat.