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1. Oxford American Dictionary

   primordium

   • IPA[prīˈmôrdēəm]

   美式

   • n.
     an organ, structure, or tissue in the earliest stage of development

   • noun: primordium, plural noun: primordia

2. • 釋義

   n.

   名詞

   • 1. an organ, structure, or tissue in the earliest stage of development the primordium of the pituitary the axils of the leaf primordia
3. • 更多解釋

   primordium

   • IPA[prʌɪˈmɔːdɪəm]

   英式

   • n.
     an organ, structure, or tissue in the earliest stage of development: the primordium of the pituitary the axils of the leaf primordia

   Oxford Dictionary