as·cus /ˈæskəs/
  子囊
  as·cus /ˈæskəs/ 名詞
  As·cus n.; pl. Asci  Bot. A small membranous bladder or tube in which are inclosed the seedlike reproductive particles or sporules of lichens and certain fungi.
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  ascus
       n : saclike structure in which ascospores are formed through
           sexual reproduction of ascomycetes
       [also: asci (pl)]