|  | 
Definition of Ice giant
1. Noun. (astronomy) A giant planet composed mostly of astronomical ices containing oxygen, carbon, nitrogen, and sulfur, and smaller than a gas giant. ¹
¹ Source: wiktionary.com
|  | 
1. Noun. (astronomy) A giant planet composed mostly of astronomical ices containing oxygen, carbon, nitrogen, and sulfur, and smaller than a gas giant. ¹
¹ Source: wiktionary.com