exosphere

名词 n.
中文释义

英文释义

名词 n.
  1. the uppermost layer of a planet's atmosphere
  2. an extremely thin atmosphere, as on Saturn's moon Dione
    — "Scientists weren't even sure Dione would be big enough to hang on to an exosphere" ('Cassini Detects Hint of Fresh Air at Dione', , JPL, Mar. 02, 2012)

词形变化

exospheres plural

词汇关系

衍生词
exospheric

词源

From exo- + -sphere.
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