1. occurring at the same time
2. occupying the same position in space
Usage: geometry; mathematics

Examples

• The two events were coincident, happening at exactly the same moment.
• Her arrival was coincident with the start of the meeting.
• The lines are coincident, lying exactly on top of each other.
• The coincident timing of both announcements surprised everyone.
• In geometry, coincident points occupy the same location.
• The coincident occurrence of these symptoms suggests a common cause.