Term Name:	extraembryonic structure
Synonyms:	extra-embryonic structure, extraembryonic structures, extraembryonic tissue
Definition:	A multicellular anatomical structure that is associated with an embryo and derived from the zygote from which it develops, but which does not contribute to the embryo proper or to structures that are part of the same organism after embryogenesis.
Ontology:	Cell Ontology [UBERON:0000478]