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proembryo 原胚 原胚 Proembryo \Pro*em"bry*o\, n. [Pref. pro- embryo. ] (Bot.)
(a) The series of cells formed in the ovule of a flowering plant after fertilization, but before the formation of the embryo. (b) The primary growth from the spore in certain cryptogamous plants; as, the proembryo, or protonema, of mosses. [1913 Webster]
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