1. military observation of a region to locate an enemy or ascertain strategic features
Usage: military
2. preliminary surveying or research

Examples

• The troops conducted reconnaissance before the attack.
• Aerial reconnaissance revealed enemy positions.
• The scout team returned from their reconnaissance mission.
• We need to do some reconnaissance of the area before hiking.
• The company sent a team for market reconnaissance.
• Satellite reconnaissance provides valuable intelligence.
• The reconnaissance flight lasted three hours.