concentrate

verb

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.”

4. (intransitive)To focus one's thought or attention (on).

   “(oneself)”

   “Let me concentrate!”

   “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.”

adj

1. concentrated

   “It is, when good, a concentrate yellow.”

   “Subtracting the liters of concentrate fluid required in the diluted operation.”

noun

1. A substance that is in a condensed form.

   “orange concentrate”