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Pronunciation: si'on

Definition: In experimental embryology, an embryonic tissue or part grafted to another embryo of the same or of another species.

[O. Fr. sion, shoot, sprig, fr. L. seco, to cut]

See Also: chimera

Further information

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.