Open Dictionary
mouse here to listen, click to choose/add more
Location: USA
Source: Learn That Word
Profile URL:

Are you a native English speaker? How do you pronounce this word?

Thank you for contributing!
upload mp3 file or record now it's easy, promised!

{%type%} Definitions

WordNet 3.0Copyright Princeton University


Short "hint"

n. - Strengthening the amount of a substance in a unit amount of another substance (as of a solute in a mixture) by removing the other substance; Bringing together military forces; Great and constant diligence and attention.

Usage examples (36)
  • Concentrations of both pollutants, but particularly black smoke, are typically higher in the winter months
  • The difference in concentration is restored by sodium being transported out once again.
  • The power of attention is called concentration, which is directed by the will.
  • Penultimatly she wants to deal with what she refers to as concentration camps for asylum seekers. for more
Tutoring comment

Tutoring comment not yet available...

add more
The Open Dictionary of English is a collaborative project, based on Open Source materials, LearnThat resources, and partner APIs.
We give special thanks to our LearnThat volunteers, as well as Princeton University and Wiktionary for their Open Source word data. We're also grateful for the support given by Google,,, and YouTube,,,,, as well as the generous Creative Commons community.