1. to focus one’s attention or mental effort on a particular object or activity
2. to gather together in numbers or in a mass
3. to make a liquid stronger by removing water

1. a substance made stronger by having water removed

Examples

• I need to concentrate on my homework.
• She couldn’t concentrate with all the noise outside.
• The troops concentrated near the border.
• Heat the sauce to concentrate the flavors.
• Add two tablespoons of tomato concentrate to the recipe.
• Orange juice concentrate needs water added to it.
• The students concentrated in the library during finals week.