A Japanese form of wrestling in which a competitor loses if forced from the ring or if any part of his body except the soles of his feet touches the ground.
Origin of sumoJapanese sum&omacron; : su, mutually + m&omacron;, to rush at.
Asashoryu (right) and Hakuho (left), both of Mongolia, at the July 2007 Grand Sumo Tournament
- (biochemistry) small ubiquitin-related modifier
- A Misumalpan language of Nicaragua.