en·do·spore /ˈɛndoˌspor, ˌspɔr/
  內生孢子; 內孢子; 孢子內壁
  en·do·spore /-ˌspo(ə)r, ˌspɔ(ə)r/ 名詞
  內生孢子,(孢子或花粉)內壁
  En·do·spore n.  Bot. The thin inner coat of certain spores.
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  endospore
       n : a small asexual spore that develops inside the cell of some
           bacteria and algae