supereon

名词 n.
中文释义

英文释义

名词 n.
  1. A time period encompassing more than one eon, principally used to characterize the Precambrian.
    — Sometimes the Hadean, Archean and Proterozoic are lumped together in a supereon called the Precambrian.

词形变化

supereons plural

词源

From super- + eon.
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