cryomagma

From cryo- +‎ magma.

cryomagma (countable and uncountable, plural cryomagmas)

2. (planetology, geology, volcanology) Collectively, substances such as water, ammonia or methane that are found within some planets and are expelled by cryovolcanoes.

• cryomagmatic

• cryovolcano
• cryolava