1) English boy name 
[crater] This is a relatively fresh crater formation that has not been degraded through impact erosion. The rim edge is well-defined except along the southwestern edge. Along that side skirt of ejecta from Karpinsky overlies the edge and the inner wall, reaching to the edge of the interior floor. The remainder of the inner wall has a slumpe...
Annibale, Italian astrophysicist. ... Lived: 1844-1919. ... See: Ricco's law. ... (05 Mar 2000) ... 
Type: Term Pronunciation: rē′kō Definitions: 1. Annibale, Italian astrophysicist, 1844-1919. See: Ricco law