延展纪

延展紀
Yánzhǎn Jì
  1. (geology) the Ectasian period (part of the Mesoproterozoic era, spanning from 1.4 to 1.2 billion years ago)
  2. the Ectasian period (part of the Mesoproterozoic era, spanning from 1.4 to 1.2 billion years ago)

Wiktionary

Entry Composition

1 延展 yánzhǎn to extend; to stretch out
=2 纪 Jǐ
  1. surname Ji
  2. also pr. Jì
=2 纪 jì
  1. order
  2. discipline
  3. age
  4. era
  5. period
  6. to chronicle