1. focusing one’s attention or mental effort on a particular object or activity
Usage: present participle of concentrate
2. gathering or collecting something in one place or area
Usage: present participle of concentrate

Examples

• She was concentrating on her homework when the phone rang.
• The student had trouble concentrating during the noisy test.
• He spent the morning concentrating his efforts on the project.
• The company is concentrating its resources in the new market.
• I’m concentrating all my energy on training for the marathon.
• The teacher asked the class to stop talking and start concentrating.