The prefix "urano-" pertains to the planet Uranus. In the English language, there are not many common synonyms for this prefix. However, there are a few words that can be used in its place to convey a similar meaning. For instance, "uranian" refers to anything that pertains to the planet Uranus. Similarly, the term "cryogenic" can also be used to refer to objects or processes related to low temperatures, which is a characteristic of Uranus. Other words that can be used interchangeably with "urano-" include "celestial" and "astral," both of which convey a sense of something relating to the universe or astronomical objects.