Tombaugh Regio

== Translingual == === Etymology === From being a region surface feature (a regio; from Latin regio). From English Tombaugh. Named after Clyde Tombaugh, the discoverer of dwarf planet Pluto. === Proper noun === Tombaugh Regio (planetology) a region of Pluto, Solar System, a heart-shaped region on Pluto. ==== Hyponyms ==== === Further reading === Tombaugh Regio on Wikipedia.Wikipedia