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Pronunciation: su'do-a-sef'a-lus

Definition: An apparently headless placental parasitic twin that, however, has rudimentary cephalic structures that can be demonstrated by dissection.

[pseudo- + G. a- priv. + kephale, head]

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