primordium

primordium
An aggregation of cells in the embryo indicating the first trace of an organ or structure. SYN: anlage (1). [L. origin, fr. primus, first, + ordior, to begin]
- genital p. ovoid clump of cells seen in the rhabditiform larvae of Strongyloides stercoralis and hookworm that becomes the reproductive system.

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pri·mor·di·um -ē-əm n, pl -dia -ē-ə the rudiment or commencement of a part or organ: ANLAGE <the gonadal \primordium>

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pri·mor·di·um (pri-morґde-əm) pl. primorґdia [L. “the beginning”] the earliest discernible indication during embryonic development of an organ or part; called also anlage or rudiment.

Medical dictionary. 2011.


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