primordium (redirected from primordia)

primordium /pri·mor·di·um/ (-um) pl. primor´dia   [L.] the earliest indication of an organ or part during embryonic development.

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pri·mor·di·um (pr-môrd-m)

n. pl. pri·mor·di·a (-d-)

An aggregation of cells in the embryo indicating the first trace of an organ or structure.

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primordium (primor´dem),

n the first evidence of an organ in a developing embryo.

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primordium

the first beginnings of an organ or part in the developing embryo. Called also anlage.