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Meaning of sister planet | Babel Free

Noun CEFR B2

Definitions

a planet that shares similar physical characteristics, such as size, density and mass, with another planet

CEFR level

B2

Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.

See also

sister republic sister ship Sister Souljah moment sister-german sister-in-arms sister-in-law