concentrate

B2 · Upper Intermediate Academic

v. to bring things together into one place or group.

v. to bring together or collect into a common centre or focus. Transitive and often used in passive constructions.

日本語:集中する※

“The company decided to concentrate its offices in the city centre.”

“The troops were ordered to concentrate their forces along the northern border in anticipation of the seasonal migration.”

C1 · Advanced Science Technical

v. to make a liquid stronger by removing water or other parts.

v. to increase the concentration of a substance in a mixture, typically by removing a solvent such as water.

日本語:濃縮する※

“You can concentrate the sauce by boiling it for a few more minutes.”

“The chemist used a vacuum evaporator to concentrate the solution without damaging the heat-sensitive proteins.”

B2 · Upper Intermediate Countable noun

n. a substance that has been made stronger by removing water.

n. a substance or solution that has been made more potent by the removal of a diluting agent.

“This orange juice is made from concentrate, so you need to add water.”

“The laboratory received a shipment of high-purity concentrate that required careful handling before it could be safely diluted for testing.”