noun
Astronomical term for a type of planet like Uranus or Neptune, composed mainly of elements heavier than hydrogen and helium, such as water, ammonia, and methane ices. Also referred to as 天王星型惑星.
See also: 天王星型惑星 (てんのうせいがたわくせい)
天王星と海王星はアイスジャイアントに分類される。
Uranus and Neptune are classified as ice giants.
Variant with interpunct; less common but seen in some texts.
Synonymous Japanese term for ice giant, literally 'Uranus-type planet'.
Loanword from English 'ice giant', used in astronomy.