1. relating to or occurring at perigee, the point in the moon’s orbit when it is closest to Earth
Usage: astronomy

Examples

• The perigean spring tides were exceptionally high this month.
• Scientists studied the perigean moon’s gravitational effects on ocean currents.
• The perigean position of the moon creates stronger tidal forces.
• Coastal flooding increased during the perigean lunar cycle.
• Astronomers predicted the perigean moon would appear larger than usual.
• The perigean tide caused unusual wave patterns along the shore.