Within the embryonic body, e.g., the portion of the umbilical vein within the embryo (in contrast to the portion in the umbilical cord which is discarded at birth). Cf.:extraembryonic.
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in·tra·em·bry·on·ic -.em-brē-'än-ik adj situated or occurring within the embryo
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in·tra·em·bry·on·ic (in″trə-em″bre-onґik) within the body of the embryo. Cf. extraembryonic.Medical dictionary. 2011.