1. (astronomy) a technique that uses radar echoes to examine bodies within the solar system, obtaining information about size, shape, topography, surface density, spin etc.

Encyclopedia: Radar astronomy

• wide
• wide area network
• wide boy
• wide of the mark
• wide receiver
• wide wale
• wide-angle
• wide-angle lens
• wide-awake
• wide-body
• wide-body aircraft
• wide-cut
• wide-eyed
• wide-open
• wide-ranging
• wideband
• widegrip pushup
• widely
• widely distributed
• widen
• widener
• wideness
• widening
• widescreen
• widespread